The volume of air within the lung as respiratory movements are performed can be classified as follows:
Vital capacity - 4800mlMinimal volume - 0 -500mlExpiratory lung volume - 700-1200ml.Residual volume - 1200 mlInspiratory reserve volume - 1900-3300ml.Functional residual capacity - 1800 – 2200 mLResting tidal volume Volume (ml) - 300-500ml Total lung capacity - about 6,000mLWhat is lung volume?Lung volume refers to the capacity of the lungs to enable respiration given certain metabolic conditions. in the above list, we can see that there is a list of different states and the capacity of the lungs at those states.
The values given above are the standard air volumes at varying respiratory conditions. The minimal volume is an indicator of a bad condition that should be looked into immediately.
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A high-wire artist missteps and falls 9.2 m to the ground. What is her velocity upon landing (just before she strikes the ground)?
Answer:
Explanation:
We can use the kinematic equation to find the velocity of the high-wire artist just before she strikes the ground:
vf^2 = vi^2 + 2ad
where vf is the final velocity (the velocity just before she strikes the ground), vi is the initial velocity (which we can assume is 0), a is the acceleration due to gravity (which is approximately 9.81 m/s^2), and d is the distance fallen (which is 9.2 m).
Plugging in the values, we get:
vf^2 = 0 + 2(9.81 m/s^2)(9.2 m)
Simplifying:
vf^2 = 180.24 m^2/s^2
Taking the square root of both sides:
vf = 13.43 m/s
Therefore, the velocity of the high-wire artist just before she strikes the ground is 13.43 m/s.
Answer:
Below
Explanation:
Explanation:
Her POTENTIAL energy (mgh)
will be converted to KINETIC energy (1/2 mv^2)
so
mgh = 1/2 mv^2 divide both sides of the equation by m
gh = 1/2 v^2 solve for 'v'
v = sqrt ( 2 g h) = sqrt ( 2 * 9.81 * 9.2 ) = 13.4 m/s
I’m so stuck I’ve attempted these questions so many times I really don’t know
Answer:
1st one 3N to the left to achieve equilibrium
2nd one 5N to the left to achieve equilibrium
3rd one 2N to the top to achieve equilibrium
4th one 8N to the right to achieve equilibrium
Explanation:
What are density and volume?
Simple explanation please
Answer:
Explanation:
Density is a measure of how much mass is contained in a given volume. It is the amount of matter (mass) in a given space (volume). Density is usually expressed in units of mass per unit of volume, such as kilograms per cubic meter (kg/m³) or grams per milliliter (g/mL).
Volume is the amount of space occupied by an object or substance. It is the measurement of the three-dimensional space occupied by an object, substance, or material. Volume can be measured in different units, such as liters (L), cubic meters (m³), or cubic feet (ft³), depending on the scale of the object being measured.
In this circuit, what is the potential difference across C4?
Use the following values in your calculation:
V = 12.0 V
C1 = 3.0 ?F
C2 = 2.0 ?F
C3 = 2.0?F
C4 = 1.0 ?F
C5 = 4.0 ?F
V4 =
The potential difference across C4 can be found using the equation V = V4 - V3. Using the given values, V = 12.0V, C1 = 3.0 ?F, C2 = 2.0 ?F, C3 = 2.0 ?F, C4 = 1.0 ?F, and C5 = 4.0 ?F, we can solve for V4.
V4 = 12.0V + (3.0 ?F + 2.0 ?F + 2.0 ?F + 1.0 ?F) / (1.0 ?F + 4.0 ?F)
V4 = 12.0V + (8.0 ?F / 5.0 ?F)
V4 = 12.0V + 1.6V
V4 = 13.6V
Therefore, the potential difference across C4 is 13.6V - 12.0V = 1.6V.
The potential difference across C4 can be determined using the formula Q = CV. Where Q represents the charge stored in the capacitor, C represents capacitance, and V represents the potential difference across the capacitorTo determine the potential difference across C4, we can use the formula Q = CV. To determine Q, we need to determine the equivalent capacitance of the circuit.
The equivalent capacitance of capacitors in parallel is equal to the sum of their capacitance. The equivalent capacitance of capacitors in series is equal to the reciprocal of the sum of their reciprocals.C1, C2, and C3 are in series, and their equivalent capacitance is given by:C_eq1=1/((1/C1)+(1/C2)+(1/C3))=1/(1/3+1/2+1/2)=3/7 μF{C_eq1=1/((1/C1)+(1/C2)+(1/C3))=1/(1/3+1/2+1/2)=3/7μF}C_eq2 is the equivalent capacitance of C4 and C5 in parallel.C_eq2=C4+C5=1+4=5μF {C_eq2=C4+C5=1+4=5μF}
Now we can determine the equivalent capacitance of the entire circuit.C_eq=C_eq1+C_eq2=3/7+5=38/7μF{C_eq=C_eq1+C_eq2=3/7+5=38/7μF}Now, we can determine the charge stored in the circuit.Q=C_eqV=38/7*12= 65.14μC{Q=C_eqV=38/7*12=65.14μC}To determine the potential difference across C4, we can use the formula Q = CV.V=C4Q/C4= 65.14/1 = 65.14V{V=C4Q/C4=65.14/1=65.14V}Therefore, the potential difference across C4 is 65.14 V.
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What type of electromagnetic wave is sent as a signal by a cell phone to the
nearest cell tower?
A. Gamma rays
B. Microwaves
C. X-rays
D Ultraviolet
Answer:B. Microwaves
Explanation:
Hope this helped you. Pls brainliest! :D
Please help 50 points and Brainly
Answer: 1st one: chemical to mechanical to electrical to thermal
2nd: hydroelectric, 3rd: gravity
Help with 2 Kirchoff law exercises
1-For the circuit in the figure below, find V₁ and V2.
2-Find the currents and voltages in the following circuit.
Answer:
v1 = 8V; v2=12Vi1=9/7A, i2=13/14A, i3=5/14A, v1=18/7V, v2=52/7V, v3=10/7VExplanation:
You want the voltages in each circuit, and also the currents in the second circuit.
1. Voltage dividerIn this series circuit, the voltage is divided in proportion to the resistance.
v1 = 2/5(20V) = 8V
v2 = 3/5(20V) = 12V
2. Current equationsThe sum of voltages around a loop is 0, so we can write the equations ...
2·i1 +8·i2 = 10
8·i2 -4·i3 = 6
i1 -i2 -i3 = 0
The attachment shows the calculation of the currents. Those are used to find the corresponding voltages.
(i1, i2, i3) = (9/7, 13/14, 5/14)A
(v1, v2, v3) = (18/7, 52/7, 10/7)V
__
Additional comment
A T-circuit as in figure 2 can usually be solved handily by making use of Norton's equivalents for the sources. The left source can be replaced by a 5A current source in parallel with 2Ω. The right source can be replaced by a 1.5A current source in parallel with 4Ω. Then the circuit degenerates to a 6.5A source in parallel with 8/(4+1+2) = 8/7Ω. So, the voltage v2 is ...
v2 = (6.5A)(8/7Ω) = 52/7V
Then {v1, -v3} = {10, 6} -v2 ⇒ (v1, v3) = (18/7, 10/7)
The currents are found by dividing the voltage by the resistance:
{i1, i2, i3} = {18/7, 52/7, 10/7}÷{2, 8, 4} = (9/7, 13/14, 5/14) . . . . as above
Note that these calculations can all be done without the aid of calculator.
Parallel resistors that are multiples of one another can be thought of as some number of resistors in parallel. Here, the 2Ω resistor can be thought of as 4 8Ω resistors in parallel. Similarly, the 4Ω resistor is effectively 2 8Ω resistors in parallel. Thus the parallel combination of 2Ω, 8Ω, and 4Ω is effectively 4+1+2 = 7 8Ω resistors in parallel, or 8/7Ω. No calculator required.
Commercially available large wind turbines blade span diameters larger than 100 m and over 3 MW of electric power at peak design have generate conditions. Consider a wind turbine with a 75-m blade span subjected to 25-km/h steady winds. If the combined turbine–generator effi- ciency of the wind turbine is 32 percent, determine (a) the power generated by the turbine and (b) the horizontal force exerted by the wind on the supporting mast of the turbine. Take the density of air to be 1.25 kg/m3, and disregard frictional effects on the mast.
The horizontal force that was exerted by the wind on the mast based on the power is 67.3KN.
What is the force?Blade Stan, d = 75m
Radius of Blade, r = 75m
wind velocity, V = 30 km/h V = 8.333 m/s
Turbine Generator efficiency or Power Co-efficient ((p) = 32% 0.32.
Flow rate across the turbine (in) = 125X8.333X X (75) 2 m
= 46017.583 kg/s
Air Exit velocity, Ve = V×√1 - Nterbine
Ve = 8.333 x √1 1- 0.32
Ve = 6.872 mls
Horizental force in x-direction (F); -
Fx = m (ve-v)
Fx = 46017-583X(6-872-8.333) = 67265.381 N
The Horizental force Extered on the Supporting mast F = -F F= 67.2654 KN
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Determine the horizontal force that was exerted by the wind on the mast base
Use the work energy theorem to rank the final kinetic energy of a ball based on the initial kinetic energy Ki, the magnitude of a constant force F on the ball, the displacement of the ball, d and the angle, theta between the displacement of the ball and the net force on the ball. Rank from greatest kinetic energy (1) to least kinetic energy (4).
a) Ki=150J F=10N d=15m theta=90 degrees
b) Ki=300J F=200N d=1.5m theta=180 degrees
c) Ki=200J F=25N d=4m theta=0 degrees
d) Ki=450J F=15N d=30m theta=150 degrees
Answer:
Explanation:
The work-energy theorem states that the net work done on an object is equal to its change in kinetic energy. Therefore, we can use this theorem to calculate the final kinetic energy of the ball in each case.
We know that the work done by a constant force is given by the equation W = Fd cos(theta), where F is the magnitude of the force, d is the displacement of the ball, and theta is the angle between the force and displacement vectors.
Using the work-energy theorem, we can write:
W = ΔK = Kf - Ki
where ΔK is the change in kinetic energy, Kf is the final kinetic energy, and Ki is the initial kinetic energy.
We can rearrange this equation to solve for Kf:
Kf = Ki + W = Ki + Fd cos(theta)
a) Kf = 150 J + (10 N)(15 m)cos(90°) = 150 J
b) Kf = 300 J + (200 N)(1.5 m)cos(180°) = 0 J
c) Kf = 200 J + (25 N)(4 m)cos(0°) = 300 J
d) Kf = 450 J + (15 N)(30 m)cos(150°) = 112.5 J
Ranking from greatest to least final kinetic energy:
c) Ki=200J F=25N d=4m theta=0 degrees
a) Ki=150J F=10N d=15m theta=90 degrees
d) Ki=450J F=15N d=30m theta=150 degrees
b) Ki=300J F=200N d=1.5m theta=180 degrees
Person A stands on the ground, train B with proper length L moves to the right at speed 3c/5, and person C runs to the right at speed 4c/5. C starts behind the train and eventually passes it. Let event E1 be "C coincides with the back of the train," and let event E2 be "C coincides with the front of the train." Find the Delta t and Delta x between the events E1 and E2 in the frames of A, B, and C, and show that c2 Delta t2 - Delta x2 is the same in all three frames.
The Delta t and Delta x between the events E1 and E2 in the frames of A, B, and C, and show that c2 Delta t2 - Delta x2 is the same in all three frames. The Space time interval in all frames is [tex]\frac{144}{25}L^2[/tex].
In the following we will find out the time interval and space interval between the two events E1 and E2 with respective to A, B and C.
Simultaneously we will find out space time interval in each case and finally show that they are the same.
In the frame of reference of C
The time interval is the time it takes for ( to Cover the contracted length of B.
with respect to C, B will have a relative velocity Ux' = (-5/13)C (we had already found out it.Only the sign changes)
Then the contrasted length of B with respect to C.
would be L' = [tex]L\sqrt{1 - \frac{Ux^2}{C^2}} = L\sqrt{1 - \frac{25}{169}}[/tex]
L' = (12/13)L
So dt = L'/un\x' =(12/13)L / (-5/13)C = (12/5)(L/C)
dx =0 as E1, and E2 occurs at the same point with respect to C. Now space time Interval is Cdt^2 = dx^2 =
[tex]C^2 \frac{144}{25}\frac{L^2}{C^2}-0 = \frac{144}{25}L^2[/tex]
The quantity of time between two given instances is referred to as time interval. In other words, it is the amount of time that has surpassed among the beginning and end of the event. it is also called elapsed time. interval of time is measured in special units. every unit describes a one of a kind quantity of time. some units are better appropriate to specific durations of time.
As an instance, if you were baking a cake within the oven, you will select to measure the time in minutes or perhaps in hours. in case you were calculating the time on your birthday from a particular date, you will choose to measure the time in days, weeks, or months (relying on how far away it became).
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Determine the linear velocity of blood in the aorta with a radis of 1.5 cm, if the duration of systole is 0.25 s, the stroke volume is 60 ml.
Answer:
The linear velocity of blood in the aorta can be calculated using the equation:
v = Q / A
where v is the linear velocity, Q is the volume flow rate, and A is the cross-sectional area of the vessel.
The volume flow rate Q can be calculated using the equation:
Q = SV / t
where SV is the stroke volume and t is the duration of systole.
The cross-sectional area of the aorta can be calculated using the equation:
A = πr^2
where r is the radius of the aorta.
Given that the radius of the aorta is 1.5 cm, the stroke volume is 60 ml, and the duration of systole is 0.25 s, we can calculate the volume flow rate Q:
Q = SV / t = 60 ml / 0.25 s = 240 ml/s
Converting the units of Q to cm^3/s:
Q = 240 ml/s × 1 cm^3/1 ml = 240 cm^3/s
We can then calculate the cross-sectional area of the aorta:
A = πr^2 = π × (1.5 cm)^2 = 7.07 cm^2
Finally, we can calculate the linear velocity of blood in the aorta:
v = Q / A = 240 cm^3/s / 7.07 cm^2 = 33.9 cm/s
Therefore, the linear velocity of blood in the aorta is 33.9 cm/s.
A 509g mass oscillates with an amplitude of 13.0cm on a spring whose spring constant is 20.0N/m . A. Determine the period T= ....... s B. Determine the maximum speed Vmax= ...... m/s C. Determine the total energy Wtotal= ........ J
Period (T):
T = 2π√(m/k)
where m is the mass of the object and k is the spring constant.
Maximum speed (Vmax):
Vmax = Aω
where A is the amplitude of oscillation and ω is the angular frequency, which is given by ω = √(k/m).
Total energy (Wtotal):
W total = 1/2 kA^2
where k is the spring constant and A is the amplitude of oscillation.
Given:
m = 509g = 0.509 kg
A = 13.0 cm = 0.13 m
k = 20.0 N/m
A. Determine the period T:
T = 2π√(m/k)
T = 2π√(0.509 kg / 20.0 N/m)
T = 0.798 s
Therefore, the period of oscillation is 0.798 s.
B. Determine the maximum speed Vmax:
ω = √(k/m) = √(20.0 N/m / 0.509 kg) = 8.05 rad/s
Vmax = Aω = 0.13 m * 8.05 rad/s = 1.05 m/s
Therefore, the maximum speed of the oscillating mass is 1.05 m/s.
C. Determine the total energy W total:
Wtotal = 1/2 kA^2 = 1/2 * 20.0 N/m * (0.13 m)^2 = 0.135 J
Therefore, the total energy of the oscillating mass is 0.135 J.
What is energy ?Energy is a physical property of objects that can be transferred to other objects or converted into different forms, but cannot be created or destroyed. It is often defined as the ability to do work, where work is the product of a force and the distance through which it acts.
Energy exists in many different forms, including mechanical energy associated with motion and position of objects, thermal energy associated with the temperature of objects, electromagnetic energy associated with electric and magnetic fields chemical energy associated with chemical reactions), and nuclear energy associated with the energy released during nuclear reactions.
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while it is important to keep the two power supplies separate when powering a dc motor it is also necessary to connect
It is important to connect the two power supplies of a DC motor in order to prevent the motor from being damaged. By connecting the two power supplies, current can flow from one to the other, allowing the motor to be properly powered.
When powering a DC motor, it is important to keep the two power supplies separate to ensure safety and avoid damaging the motor. However, it is also necessary to connect the two power supplies with a common ground.
A DC motor is an electric motor that runs on direct current (DC) electricity. It works on the principle of electromagnetic induction and is widely used in industrial and household applications for various purposes, such as driving machinery and appliances.
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Adult brains are not capable of neurogenesiss . True False
Answer:
False. Adult brains are capable of neurogenesis, which is the process of generating new neurons (nerve cells) in the brain. Although it was previously believed that neurogenesis only occurred during early development, research has shown that certain regions of the brain, such as the hippocampus, continue to produce new neurons throughout adulthood. However, the rate of neurogenesis in adults is much lower than in developing brains
EX :SOMEONE FATHER TODAY YOUR FATHER DOES,T KNOW ABOUT TECH OR ANY SAMRT APPS BUT HE KNOW BETTER N HIS GENRATON
figure is dilated by a factor if 3 centered at the origin
Co-ordinates are (-3, 9), ( -6, -6), ( 9, -3), for this we have to learn scale factor.
What is scale factor?The ratio of the scale of an original thing to a new object that is a representation of it but of a different size is known as a scale factor (bigger or smaller).
Given coordinates of triangle (-1, 3), (-2, -2) and (3, -1)
As, the figure dilated by factor 3
Then the coordinates after dilation is
(-1 * 3, 3 * 3 ) = ( -3, 9 )
(-2 * 3, -2 * 3 ) = ( -6, -6 )
(3 * 3, -1 * 3 ) = ( 9, -3 )
Hence co-ordinates are :
(-3, 9), ( -6, -6), ( 9, -3).
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A group of students conduct an experiment to study Newton's second law of motion. They applied a force to a toy car and measure its acceleration. The table shows the results.
Force (N) Acceleration (m/s²)
2.0 5.0
3.0 7.5
6.0 15.0
If the students graph the data points, which conclusion will they be able to make?
The data points will fall along a line. This shows that as the force increases, the acceleration increases.
Newton's second law of motion is the fundamental law of motion in classical mechanics.
The data points will fall along a line. This shows that as the force increases, the acceleration increases.
A group of students conduct an experiment to study Newton's second law of motion. They applied a force to a toy car and measure its acceleration.
The Force (N) and Acceleration (m/s²) measurement of the group of students, as seen in the table, is given as 2.0 and 5.0, 3.0 and 7.5, and 6.0 and 15.0 respectively.
As the group of students will graph the data points, they will be able to conclude that the data points will fall along a line. This shows that as the force increases, the acceleration increases.
The law is also known as the force law, and it is a fundamental principle of classical mechanics. It defines the relationship between an object's motion and the forces acting upon it.
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For which of the following types of electromagnetic radiation will diffraction most likely occur as the wave passes through a classroom doorway? A) X-rays, because of their high energy. B) Visible light, because that type of electromagnetic radiation is most abundant. C) Radio waves, because of their wavelength. D) Diffraction will occur equally for all electromagnetic waves.
Option C, Because of the wavelength of radio waves and other forms of electromagnetic radiation, diffraction is most likely to occur as the wave travels through a classroom doorway.
Diffraction is the bending of waves around barriers or through apertures that are equivalent to or smaller than the wavelength of the wave.
Because radio waves have longer wavelengths than visible light and X-rays, they are more likely to diffract while passing through a similar-sized aperture, such as a classroom doorway.
Because X-rays have considerably shorter wavelengths and visible light has wavelengths in between, diffraction is less likely to occur in this scenario for these forms of electromagnetic energy. As a result, option C is the right answer.
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Derive a formula for the efficiency of the Diesel cycle, in terms of the compression ratio �
1
/
�
2
V 1
/V 2
and the cutoff ratio �
3
/
�
2
.
V 3
/V 2
. Show that for a given compression ratio, the Diesel cycle is less efficient than the Otto cycle. Evaluate the theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2.
The theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2 is 0.94.
The efficiency of the Diesel cycle, denoted by η, can be expressed as a function of the compression ratio (r)
and the cutoff ratio (r_c)
as follows:
[tex]η = 1 - 1/(r^(r_c-1))[/tex]
This equation shows that as the compression ratio increases, the efficiency of the Diesel cycle increases.
When comparing the efficiency of the Diesel cycle to that of the Otto cycle, it can be seen that for a given compression ratio, the Diesel cycle is less efficient than the Otto cycle. To evaluate the theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2, we can use the equation above to calculate the efficiency as:
[tex]η = 1 - 1/(18^(2-1))[/tex]
η = 1 - 1/18
η = 0.94
Therefore, the theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2 is 0.94.
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Janine hits a hockey puck across an ice rink. The distance between the puck and Janine for the first ten seconds after she hits it is graphed below.
Judging from the graph, which of the following statements is true?
A.
The hockey puck moved at a constant speed away from Janine.
B.
The hockey puck's speed decreased as it moved away from Janine.
C.
The hokey puck moved at a constant speed toward Janine.
D.
The hockey puck's speed increased as it moved away from Janine.
A. The hockey puck moved at a constant speed away from Janine.
When the hockey puck is skating across the ice at a constant speed?The hockey puck is in equilibrium as a result of moving at a steady pace. Dynamic equilibrium is the name given to this form of equilibrium. Hence, if the hockey puck is moving over the ice at a constant pace, it is in equilibrium.
Is velocity merely the direction in which an object moves and unrelated to speed?There is no connection between velocity and speed; velocity is the direction that an object moves in. Velocity is the combination of speed and direction. Speed and velocity are very similar to each other.
Which of Newton's equations of motion best describes the motion of a hockey puck sliding through ice without any external forces acting on it?The sum of the forces exerted on an object must be zero since, in accordance with Newton's first law of motion, an object moving at a constant speed experiences no net external force.
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Where will the temperature most likely be the highest?
A. in a forest
B. in an open field
C. in the shade of a tree
D. in the shadow of a building
Answer:
it's b
Explanation:
no shade, direct sunlight
calculate T1 , T2 and T3
Using the triangle of forces to get the system of the forces;
T1 = 866 NT2 = 500 NT3 = 1000 NWhat is the triangle of forces theorem?If three forces acting on a body are in equilibrium, then they can be represented in magnitude and direction by the three sides of a triangle taken in order.
In other words, the three forces can be drawn as vectors, and these vectors can be arranged to form a closed triangle.
We know that we have the other end of the triangle to be;
100 Kg * 10 m/s^2 = 1000 N
The missing angle is;
180 - (30 + 60)
= 90 degrees
Thus;
1000/Sin 90 = T1/Sin 60
T1 = 100 Sin 60/Sin 90
T1 = 866/1
T1 = 866 N
1000/Sin 90 = T2/Sin 30
T2 = 1000 Sin 30/Sin 90
T2 = 500 N
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find the acceleration find the acceleration a of the sled. express your answer in terms of some or all of the variables s , v1 , and v2 .
General, acceleration (a) can be calculated using the following formula:
a = (v2 - v1) / t
where v1 is the initial velocity, v2 is the final velocity, and t is the time interval over which the change in velocity occurs.
If you know the values of s, v1, and v2, you may be able to solve for t using the following kinematic equation:
s = v1*t + (1/2)at^2
Once you have determined the time interval (t), you can plug the values of v1, v2, and t into the first formula to calculate the acceleration (a).
What is an acceleration ?Acceleration is the rate of change of velocity with respect to time. In other words, it is the measure of how quickly an object's velocity is changing. Acceleration can be in the direction of motion or opposite to it, depending on whether the object is speeding up or slowing down.
The standard unit of acceleration is meters per second squared (m/s^2). If an object's velocity changes by 1 meter per second (m/s) every second, its acceleration is said to be 1 m/s^2.
Accelerations can be either positive or negative. Positive acceleration occurs when an object's speed is increasing, while negative acceleration (also known as deceleration) occurs when an object's speed is decreasing.
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A man laid on a pool lilo has a surface area of 2m² and a weight of 900N. Calculate the pressure.
The pressure exerted by the man on the lilo is 450 pascals (Pa).
The pressure is the force per unit area, so we can calculate it using the formula:
pressure = force / area
In this case, the force is the weight of the man, which is 900 N, and the area is the surface area of the lilo, which is 2 m². Therefore, we can substitute these values into the formula:
pressure = 900 N / 2 m²
Simplifying, we get:
pressure = 450 Pa
Therefore, the pressure exerted by the man on the lilo is 450 pascals (Pa).
What is pressure?
Pressure is the amount of force applied per unit area over a surface. It is defined as the force per unit area perpendicular to the surface on which the force is acting. The unit of pressure is pascal (Pa), which is equivalent to one newton per square meter (N/m²).
What is force?
Force is a physical quantity that describes the interaction between two objects that can change the state of motion or shape of an object. It is defined as an influence that causes an object to undergo acceleration, or a change in velocity, or deformation.
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which of the following formulas gives us ml, the total number of possible orbitals within a subshell? select the correct answer below: ml
Ml = 2l + 1 is the right formula to calculate the total number of potential orbitals in a subshell.
How does ML calculate the number of orbitals?ml = -l,..., 0,..., +l is the magnetic quantum number (ml). Describes how an orbital with a certain energy (n) and form should be oriented in space. (l). Each subshell has 2l+1 orbitals, each of which may house one electron. This number separates each subshell into independent orbitals.
How many Subshells in total are there in a shell?Due to the existence of subshells in each shell, this model collapses at the n=3 shell. The names of the four subshells are s, p, d, and f. Within each subshell, a different amount of electrons can fit. The n value determines how many subshells there are in the shell.
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Question:
Which of the following formulas gives us ml, the total number of possible orbitals within a subshell?
T/F. The experiments in this lab session use the property of laser light collimation because in this way ligtht does not diverge (spread out)
True, The experiments in this lab session indeed make advantage of the laser light collimation feature since it prevents light from diverging.
Making light beams parallel is a technique called collimation. Due to stimulated emission, which produces photons with the same direction, frequency, and phase, the light in a laser is already collimated. Laser light is an extremely potent source of collimated light as a result, as it can travel across great distances without much spreading.
Intensity and resolution both drop off quickly as the light diverges, which can result in mistakes or information loss.
In the experiments of this lab session, the collimation of the laser light is required to ensure that the light propagates through the optical components.
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Constants I Periodic Table Suppose two parallel-plate capacitors have the same charge Q, but the area of capacitor 1 is A and the area of capacitor 2 is 2A
Two parallel-plate capacitors with the same charge Q but different areas (A and 2A) can be compared by looking at the capacitance. The capacitance of the second capacitor is double that of the first due to the increase in area.
Two parallel-plate capacitors with the same charge Q but different areas (A and 2A) can be compared by looking at the capacitance, which is defined as the ratio of the charge stored on the capacitor to the voltage applied across the plates. The capacitance C of a capacitor is given by the equation C=Q/V. Therefore, the capacitance of the first capacitor, C1, is C1=Q/V, and the capacitance of the second capacitor, C2, is C2=(2Q)/V. It is seen that the capacitance of the second capacitor is double that of the first. This is because the area of the second capacitor is double that of the first. Therefore, the same charge Q stored on the first capacitor is distributed over twice the area in the second capacitor, resulting in the capacitance being double. This can be mathematically expressed as C2 = 2C1. Thus, two parallel-plate capacitors with the same charge Q but different areas (A and 2A) can be compared by looking at the capacitance. The capacitance of the second capacitor is double that of the first due to the increase in area.
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Which of the following LEAST LIKELY affects or is the result of circulation of surface water in the oceans?
A. Trade winds
B. Gyres that circulate clockwise in the Atlantic and Pacific oceans
C. Energy from the Sun
D. Coriolis force
E. Katabatic winds
D. Coriolis force is the least likely to affect or be the result of circulation of surface water in the oceans. The Coriolis force is an inertial force that affects the movement of large masses of air or water, but it does not cause the surface water in the oceans to circulate.
The other four choices, A. Trade winds, B. Gyres that circulate clockwise in the Atlantic and Pacific oceans, C. Energy from the Sun, and E. Katabatic winds, all have an effect on surface water circulation. For example, trade winds push the surface water of the ocean from east to west, gyres circulate in a clockwise direction, energy from the Sun evaporates surface water, and katabatic winds push down cooler air from the mountains to the sea.
C. Energy from the Sun is the least likely factor to affect or result from the circulation of surface water in the oceans. The circulation of surface water in the ocean is primarily caused by the combined effect of wind, Earth’s rotation, and the ocean’s topography. Therefore, the option C. Energy from the Sun least likely affects or is the result of circulation of surface water in the oceans.The other factors mentioned are known to affect the circulation of surface water in the oceans. Wind is one of the primary factors that drive the ocean currents, which is also responsible for the movement of warm and cold water from one region to another.
Wind-generated ocean currents that set water into motion by blowing on its surface, cause water to move from one region to another. The Coriolis effect results in the formation of gyres in the oceans, which are also responsible for the circulation of surface water. Katabatic winds are responsible for mixing and churning up the water. In conclusion, the ocean current is a combination of several factors that work together to move the water from one place to another.
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could someone help me with B?
i have the mark scheme i just don't know how they got that answer
Answer:
Explanation:
Distance is the total length of the path taken from point A to B (the total distance of the whole curvy train route).
Displacement is the straight-line distance from the start point to the end point. Draw a straight line from A to B, then measure it in exact cm. Multiply your measurement in cm by 5 to get the answer in km.
a tennis ball is dropped from a height of 1.21 m above the ground. calcualte its velocity when it is 0.27m from the ground
The velocity of the tennis ball when it is 0.27m from the ground is approximately 3.39 m/s.
What is velocity?
To calculate the velocity of the tennis ball when it is 0.27m from the ground, we can use the principle of conservation of mechanical energy, which states that the total mechanical energy of an object is conserved when it moves through a conservative force field, such as gravity.
At the initial position, the ball has potential energy due to its position above the ground, but no kinetic energy as it is at rest. At the final position, the ball has no potential energy (since it is at the same height as the ground), but it has kinetic energy due to its motion. Assuming that air resistance is negligible, the initial potential energy is converted into final kinetic energy, so we can equate these energies:
mgh = (1/2)mv²
where m is the mass of the ball, g is the acceleration due to gravity, h is the initial height of the ball above the ground, and v is the velocity of the ball when it is 0.27m from the ground.
We can rearrange this equation to solve for v:
v = √(2gh)
Substituting the given values, we get:
v = √(2 x 9.81 m/s² x (1.21 m - 0.27 m)) = 3.39 m/s
Therefore, the velocity of the tennis ball when it is 0.27m from the ground is approximately 3.39 m/s.
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I'd like help with this question
the given values, we get va = sqrt((350 kg * 9.81 m/s² - 0)))
Since the cable is inextensible, the distance moved by both blocks is the same.
Let's denote the distance moved by both blocks as "d". Then, the distance moved by block A is "1m + d" to the right.
Using conservation of energy, we can write:
(1/2) * ma * va² + (1/2) * mb * vb²= (ma + mb) * g * d
where ma and mb are the masses of blocks A and B, va and vb are their velocities, and g is the acceleration due to gravity.
Since the system is released from rest, va = 0, and we can solve for vb:
(1/2) * mb * vb²= (ma + mb) * g * d
vb²= 2 * (ma + mb) * g * d / mb
vb = sqrt(2 * (ma + mb) * g * d / mb)
Now, we need to find the velocity of block A after it has moved 1m + d to the right. To do this, we can use the equations of motion. Since block A is moving to the right, we take the positive x direction to be to the right. Then, we have:
ma * a = T - fa
where a is the acceleration of block A, T is the tension in the cable, and fa is the frictional force acting on block A due to the incline.
The tension in the cable is the same throughout, so we can write:
T = mb * g
The frictional force fa can be calculated using:
fa = µ * ma * g * cos(theta)
where µ is the coefficient of friction, theta is the angle of the incline, and cos(theta) = 1/sqrt(2) since the incline makes a 45 degree angle with the horizontal.
Substituting these values, we get:
ma * a = mb * g - µ * ma * g / sqrt(2)
Solving for a, we get:
a = (mb * g - µ * ma * g / sqrt(2)) / ma
Now, we can use the equations of motion again to find the final velocity of block A after it has moved 1m + d to the right. We have:
d = (1/2) * a * t²
where t is the time taken by block A to move 1m + d to the right.
Substituting the value of a, we get:
d = (1/2) * [(mb * g - µ * ma * g / sqrt(2)) / ma] * t²
Solving for t, we get:
t = sqrt(2 * d * ma / (mb * g - µ * ma * g / sqrt(2)))
Finally, we can use the equations of motion again to find the final velocity of block A. We have:
1m + d = (1/2) * a * t²
Substituting the values of a and t, we get:
1m + d = (1/2) * [(mb * g - µ * ma * g / sqrt(2)) / ma] * [2 * d * ma / (mb * g - µ * ma * g / sqrt(2))]²
Solving for the final velocity of block A, we get:
va = sqrt((mb * g - µ * ma * g / sqrt(2)) / ma * (1m + d) / 2)
Substituting the given values, we get:
va = sqrt((350 kg * 9.81 m/s² - 0
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