The corresponding electric force on an electron near the surface of the earth is approximately 1.76 x 10^−19 N, while the gravitational force from the earth on the same electron is approximately 9.08 x 10^-30 N. This shows that the gravitational force is much weaker than the electric force.
To shield the electron from this force, one can use a Faraday cage, which is an enclosure made of conductive materials that can block external electric fields.
The cage works by redistributing the charges so that they cancel out the external electric field. In the case of a fluctuating electric field, the cage will continue to protect the electron as long as the field changes are not too rapid. For stronger or rapidly changing fields, other types of shielding may be necessary.
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A student placed a stuffed animal on the dashboard of a car. When the car accelerated quickly, the stuffed animal flew back onto the seat. Which principle BEST describes the motion of the stuffed animal as the car accelerated.inertiaspeedmomentumgravity
The principle that best describes the motion of the stuffed animal as the car accelerated is inertia.
Inertia is a property of matter that describes the resistance of an object to changes in its state of motion. An object will stay at rest or continue moving in a straight line at a constant speed if no external force acts upon it. This property of matter is referred to as inertia.
The stuffed animal in the scenario experienced the effects of inertia. The stuffed animal was at rest on the dashboard, and when the car accelerated quickly, the stuffed animal had a tendency to remain at rest due to its inertia. This resistance to a change in motion led to the stuffed animal being propelled backward and off the dashboard and onto the seat.
The principle that best describes the motion of the stuffed animal as the car accelerated is inertia. The stuffed animal had a tendency to remain at rest due to its inertia. This resistance to a change in motion led to the stuffed animal being propelled backward and off the dashboard and onto the seat.
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you have an rc circuit with a time constant of 5.35 s. if the total resistance in the circuit is 231.2 k , what is the capacitance of the circuit (in f)? don't type the units into the answer box.
The capacitance of the circuit (in f) is 2.31×10⁻⁵F for the rc circuit with a time constant of 5.35 s. if the total resistance in the circuit is 231.2 k.
What is the capacitance of the circuit?The capacitance of an RC circuit can be calculated using the equation C = τ/(R), where τ is the time constant, R is the total resistance, and C is the capacitance. For this RC circuit, the time constant is 5.35s and the total resistance is 231.2 k. Therefore, the capacitance is 5.35s/(231.2k) = 2.31×10⁻⁵F.
Time constant of the RC circuit, τ = 5.35s
Total resistance in the circuit, R = 231.2 kΩ = 231200 Ω
Capacitance of the circuit = ?
We know that, Time constant (τ) of a RC circuit = R × C.
where, R is the resistance in ohms, C is the capacitance in farads. Substitute the given values in the above equation:
τ = RC
5.35 s = R × C231200 Ω × C = 5.35 s
C = 5.35 s / 231200 Ω
C = 2.31 × 10⁻⁸ F.
Therefore, the capacitance of the circuit is 2.31 × 10⁻⁸ F.
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An object is 15 cm in front of a diverging lens with a focal length of 10 cm.
Part A
Use ray tracing to determine the location of the image.
Express your answer using two significant figures.
q =
Part B
Is the image upright or inverted?
Part C
Is the image real or virtual?
The image distance from the lens is calculated to be 6 cm.
The image formed by the diverging lens is observed to be upright and virtual.
The image distance is calculated using the following formula of lens,
1/v = 1/f - 1/u
where,
v is image distance
f is focal length
u is object distance
Focal length f is given as -10 cm as it is diverging.
Object distance u is given as 15 cm.
Putting in the values,
1/v = (-15-10)/150
1/v = -25/150
v = -6 cm
Thus, the image distance is calculated to be 6 cm. As the image is formed by diverging lens being upright and virtual.
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A body in a room at 300 k is heated to 3,000k. The amount of energy radiated each second by the body increases by a factor of:
a) 10
b) 100
c) 1,000
d) 10,000
e) 100,000
The amount of energy radiated each second by the body increases by a factor of 10000 (option D)
How do i determine the factor of increase of the energy per second?To determine the factor in which the amount of energy radiated per second increases, we shall determine the energy per second at 3000 K. Details below:
Initial temperature (T₁) = 300 KInitial energy per second (P₁) = PFinal temperature (T₂) = 3000 KFinal energy per second (P₂) = ?P₁ / T₁⁴ = P₂ / T₂⁴
P / 300⁴ = P₂ / 3000⁴
Cross multiply
300⁴ × P₂ = P × 3000⁴
Divide both sides by 300⁴
P₂ = (P × 3000⁴) / 300⁴
P₂ = P × 10000
From the above calculation, we can see that the energy per second at 3000 K, is 10000 times the energy per second at 300 K.
Therefore, we can conclude that the energy radiated increase by a factor of 10000 (option D)
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A 1500-W heater is designed to be plugged into a 120-Voutlet.What current will flow through the heatingcoil when the heater is plugged in?I = AWhat isR,the resistance of the heater?R = ohmsHow long does it take to raise thetemperature of the air in a good-sized living room(3.00{\rm m} \times 5.00{\rm m} \times 8.00{\rm m})by10.0^\circ{\rm C}? Note that the specific heat of air is 1006{\rm J}/({\rm kg}\cdot^\circ{\rm C})and the density of air is1.20\; {\rm kg}/{\rm m}^3.t= minutes
It would take approximately 161 minutes to raise the temperature of the air in the living room by 10.0°C using the given heater.
Using the formula P = IV, where P is power, I is current, and V is voltage, we can find the current flowing through the heating coil,
I = P/V = 1500 W/120 V = 12.5 A
To find the resistance of the heater, we can use Ohm's law, which states that V = IR, where V is voltage and R is resistance,
R = V/I = 120 V/12.5 A = 9.6 ohms
To calculate the amount of heat required to raise the temperature of the air in the living room, we can use the formula Q = mcΔT, where Q is heat, m is mass, c is specific heat, and ΔT is the change in temperature.
First, we need to find the mass of the air in the living room. The volume of the living room is 3.00 m × 5.00 m × 8.00 m = 120.00 m^3. Since the density of air is 1.20 kg/m^3, the mass of the air in the living room is,
m = density × volume = 1.20 kg/m^3 × 120.00 m^3 = 144 kg
Next, we can calculate the amount of heat required,
Q = mcΔT = (144 kg)(1006 J/(kg·°C))(10.0°C) = 1.45 × 10^7 J
Finally, we can use the formula Q = Pt, where t is time, to find the time required to generate this amount of heat,
t = Q/P = (1.45 × 10^7 J)/(1500 W) = 9667 seconds ≈ 161 minutes.
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Does high air pressure mean high humidity?
Answer:
Explanation:
What type of repetitions are completed with an intentionally reduced range of motion?
In order to join more than two datasets with only visual recipes, which of the following solutions is correct and why? It is not possible to join more than two datasets at a time with the Join recipe. Perform multiple Join recipes instead. Although only two datasets can be added in the Join recipe creation dialog, more datasets can be added on the Join step. Provided it is a left join, a single Join processor of the Prepare recipe is capable of joining more than two datasets at a time. None of these.
The correct solution is "Perform multiple Join recipes instead." It is not possible to join more than two datasets at a time with the Join recipe. Each Join recipe can only join two datasets at a time. To join more than two datasets, multiple Join recipes should be used in sequence.
When joining more than two datasets with visual recipes, it is possible to perform multiple Join recipes instead of joining all of them together at once. This is because the Join recipe only allows for the addition of two datasets at a time during the creation dialog, but more datasets can be added on the Join step.For instance, if there are four datasets to be joined, the first two can be joined together using the Join recipe. Then, the resulting dataset can be joined with the third dataset, followed by joining the resulting dataset with the fourth dataset. This way, all four datasets can be joined together.There is a possibility of using a single Join processor of the Prepare recipe for joining more than two datasets at a time, but only if it is a left join. However, this method is not advisable as it may result in inaccuracies and inconsistencies.The Join recipe is a recipe that enables the merging of two datasets into a single dataset based on a shared column. This recipe is useful for cleaning and integrating data from different sources into a single dataset. The Join recipe allows for the selection of the type of join to perform, such as inner join, left join, right join, and full outer join.The Prepare recipe is a recipe that is used to transform and clean datasets in preparation for analysis. This recipe allows for the selection of processors that carry out various functions such as renaming columns, filtering rows, and calculating new columns.
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if two tiny identical spheres attract each other with a force of 2.0 nn when they are 29 cm apart, what is the mass of each sphere? express your answer with the appropriate units.
The mass of each sphere with the appropriate units are the 0.6 kg by the two tiny identical spheres attract each other with a force of 2.0 nn when they are 29 cm apart.
Let's consider the following scenario: Two tiny identical spheres attract each other with a force of 2.0 nn when they are 29 cm apart. The mass of each sphere is what we need to calculate. The formula for calculating the mass of each sphere. F = Gm1m2 / r²Where:F = Force. G = Gravitational constantm1 and m2 = the masses of the object sr = the distance between the objects.
Substitute the given values: Force (F) = 2.0 nn. Distance (r) = 29 cm = 0.29 m. Gravitational constant (G) = 6.67 × 10-11 N.m²/kg²Find the mass of each sphere.m1 = m2 = m. Multiply the entire equation by ][tex]r² / G:m² = F × r² / G = (2.0 nn) × (0.29 m)² / 6.67 × 10-11 N.m²/kg²= 0.6 kg.[/tex]
Therefore, each sphere's mass is 0.6 kg.
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the regular satellites of the giant planets formed via the process of
The regular satellites of the giant planets formed via the process of accretion from a circumplanetary disk.
The giant planets in our solar system, such as Jupiter, Saturn, Uranus, and Neptune, are surrounded by a system of moons, which are divided into two main categories: regular and irregular. The regular satellites are large, spherical, and have nearly circular orbits around their host planets. They are believed to have formed from a circumplanetary disk of gas and dust that surrounded the planet during its formation. The gravitational forces of the planet caused the material in the disk to accrete into small bodies, which eventually coalesced into the regular satellites we see today.
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A block of mass m is at rest at the origin at t=0. It is pushed with constant force F0 from x=0 to x=Lacross a horizontal surface whose coefficient of kinetic friction is μk=μ0(1−x/L). That is, the coefficient of friction decreases from μ0 at x=0 to zero at x=L.
Part A
We would like to know the velocity of the block when it reaches some position x. Finding this requires an integration. However, acceleration is defined as a derivative with respect to time, which leads to integrals with respect to time, but the force is given as a function of position. To get around this, use the chain rule to find an alternative definition for the acceleration ax that can be written in terms of vx and dvxdx. This is a purely mathematical exercise; it has nothing to do with the forces given in the problem statement.
Express your answer in terms of the variables vx and dvxdx.
I got the answer:
ax =
dvxdxvx
And this was correct, but Im having trouble with Part B:
Now use the result of Part A to find an expression for the block's velocity when it reaches position x=L.
Express your answer in terms of the variables L, F0, m, μ0, and appropriate constants.
To start, let's examine the forces that the block is subjected to as it moves from x=0 to x=L.
The block is at rest at the beginning of the motion (x=0), thus there is no net force acting on it. F0 is the force pushing the block, and f = k N = k mg, where N is the normal force and g is the acceleration brought on by gravity, is the force of kinetic friction acting in the opposite direction. The block is stationary, thus we have:
F0 - μ0 mg = 0
The force pushing the block must thus be equal to and in opposition to the force of friction.
The coefficient of kinetic friction changes as the block travels over the surface.
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A solid ball of radius r_b has a uniform charge density rho. A) What is the magnitude of the electric field at a distance r>r_b from the center of the ball? Express your answer in terms ofrho,r_b,r,andepsilon_0.
E(r)=
The magnitude of the electric field at a distance r > r_b from the center of the ball is given by: E(r) = (1/3) * ρ * r_b³ / (ε₀ * r²).
Magnitude refers to the quantitative measurement of a physical quantity such as length, mass, time, temperature, or energy. Magnitude is expressed in units of measurement, which allows for standardized comparison and communication of measurements between different observers.
Magnitude can also refer to the strength or intensity of a physical phenomenon, such as the magnitude of an earthquake or the magnitude of a magnetic field. In this context, magnitude is typically measured on a logarithmic scale, where an increase of one unit represents a tenfold increase in strength. Magnitude is a fundamental concept in physics that plays a crucial role in quantifying and understanding physical phenomena.
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What is the approximate diffraction limit, in arc second, of a 84 meter diameter radio telescope observing 24 cm radiation?
A radio telescope with an estimated 84 meter diameter that is viewing 24 cm of radiation has a diffraction limit of roughly 43 arc seconds. The Rayleigh criteria, which asserts that the angular resolution .
a telescope is approximately equal to the wavelength of the radiation divided by the telescope's diameter, is used to make this determination. In this instance, the diameter is 84 meters, and the wavelength is 24 cm, or 0.24 meters. The result of dividing the wavelength by the diameter is around 0.002857 radians, or roughly 163 arc seconds. The Rayleigh criteria, which asserts that the angular resolution . Nevertheless, the resolution is often boosted by a ratio of two to account for the effects of air turbulence, yielding a about 43 arc second diffraction limit.
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when troubleshooting an hvac system, if no voltage is measured across any of the pairs of thermostat wiring terminals, the problem is most likely with the wire connected to terminal
When troubleshooting an HVAC system, if no voltage is measured across any of the pairs of thermostat wiring terminals, the problem is most likely with the wire connected to terminal C.
What is an HVAC system?HVAC stands for heating, ventilation, and air conditioning. An HVAC system is used to regulate indoor temperatures, humidity, and air quality. It may be used in residential, commercial, or industrial settings. HVAC systems can be complex, with various components and controls, and can require maintenance and repair from time to time.
When troubleshooting an HVAC system, there are several possible causes of a no-voltage problem, including: Tripped circuit breaker or blown fuse in the HVAC system or main electrical panel. Thermostat malfunction: faulty or damaged wiring or connections in the HVAC system, thermostat, or electrical panel.
Transformer failure or malfunction in this case, if no voltage is measured across any of the pairs of thermostat wiring terminals, the problem is most likely with the wire connected to terminal C. This could be due to a wiring or connection problem or a transformer failure or malfunction. A qualified HVAC technician should be consulted to diagnose and repair the problem.
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The table shows information about two waves. Based on the given information, which conclusion can be made?
(1 point)
Wave X has a faster speed.
Wave W has a greater amplitude.
Wave X has a greater amplitude.
Wave W has a faster speed.
Answer:
wave x has greater amplitude
as a joint is moved through its range of motion when strength training with free weights, such as doing the arm curl, the moment arm for the muscle when approaching the hardest portion of the lift will get ____
When performing strength training exercises with free weights, such as the arms curl, the moment arm for the muscle will get shorter as the joint is moved through its range of motion and approaches the hardest portion of the lift.
The moment arm refers to the distance between the joint axis and the line of force acting on the joint. As the joint angle changes during a lift, the moment arm for the muscle changes as well. At the beginning of the lift, the moment arm is relatively long, which allows the muscle to generate more torque. However, as the joint angle changes and the muscle approaches its maximum contraction, the moment arm gets shorter, which reduces the muscle's ability to generate torque.
In the case of the arm curl, as the lifter approaches the top of the curl, the moment arm for the biceps muscle gets shorter, which makes it more difficult to continue lifting the weight. This is why many lifters struggle to complete the top portion of the curl, as it requires more effort from the muscle to generate the necessary torque.
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member bc exerts on member ac a force p directed along line bc. knowing that p must have a 325-n horizontal component, determine (a) the magnitude of the force p, (b) its vertical component.
(a) The magnitude of the force p=325 / cos θPart, (b) Vertical component is 325 tanθ
(a) Given: Force F = P And horizontal component Fcos θ = 325N. Here, θ is the angle made by the force with the horizontal, and θ is unknown. According to the figure, member AC is inclined at an angle θ to the horizontal.
Let's resolve the force P into vertical and horizontal components. So, vertical component Fsine θ and horizontal component Fcos θ, where θ is the angle made by the force with the horizontal, and θ is unknown.
Thus, we get: Fcos θ = 325Fcos θ / F = 325 / cos θPart
(b) Vertical component = Fsine θ = (F)(sinθ)Vertical component = (325 / cosθ)(sinθ) = 325 tanθ
Thus, the magnitude of the force p is 325 / cosθ, and the vertical component of the force is 325 tanθ.
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if you stand next to a wall on a frictionless skateboard and push the wall with a force of 30 n, how hard does the wall push on you? if your mass is 60 kg, show that your acceleration is 0.5m/s^2.
If you stand next to a wall on a frictionless skateboard and push the wall with a force of 30 N, the wall will push you with a force of 30 N. Here's how you can show that your acceleration is 0.5 m/s² if your mass is 60 kg:Solution:The formula for force is:
F = ma
Where:
F is the force,
m is the mass,
a is the acceleration
Rearrange the equation for acceleration:
a = F/m
Substitute the given values:
F = 30 Nm = 60 kg
Then, solve for acceleration:
a = 30 N/60 kga = 0.5 m/s²
Therefore, your acceleration is 0.5 m/s² if your mass is 60 kg.
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determine whether each geologic feature is being caused by tensional, compressional, or shear stresses by analyzing the directions of the forces being applied.
In any case, the type of force that is responsible for creating a particular geological feature depends on the direction and magnitude of the forces that are acting on it.
Geological features are landforms that are made up of natural formations. A wide variety of geological features exist in nature, including mountains, valleys, canyons, caves, and others.
There are a variety of geological features that can be created as a result of tensional, compressional, or shear stresses.
Let's take a closer look at each type of stress:
Tensional: Tensional forces act to pull rocks apart. This can result in the formation of fault-block mountains, valleys, and rifts.
Compressional: Compressional forces act to push rocks together. This can lead to the creation of mountain ranges, folded mountains, and plateaus.
Shear Stresses: Shear stresses act to twist or bend rocks. This can result in the formation of faults, folds, and other geological features.
The forces that create geological features are typically produced by the movement of tectonic plates beneath the earth's surface.
When two tectonic plates come together, they can create compressional forces. When they move apart, they can create tensional forces.
When they slide past each other, they can create shear stresses. Other forces can also play a role, such as erosion or the buildup of sediment over time.
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a) When we blow air with our mouth narrow open, we feel the air cool. When the mouth
is made wide open, we feel the air warm. What are the thermodynamic processes involved in these processes? Explain. [2]
As the air is compressed, the work done on the air causes its temperature to increase.
What is Thermodynamic Process?
A thermodynamic process is a physical change that occurs in a system as it exchanges heat and/or work with its surroundings. It involves a change in one or more thermodynamic variables, such as temperature, pressure, volume, or entropy. There are four main types of thermodynamic processes: isothermal, adiabatic, isobaric, and isochoric.
When we blow air with our mouth narrow open, we feel the air cool because of the adiabatic expansion of the air. Adiabatic expansion is a thermodynamic process in which the air expands rapidly without losing or gaining any heat to or from the surroundings. As the air expands, it does work against the pressure of the surrounding atmosphere, and this work causes the temperature of the air to decrease. This is known as the Joule-Thomson effect.
On the other hand, when the mouth is made wide open, we feel the air warm because of the adiabatic compression of the air. Adiabatic compression is a thermodynamic process in which the air is compressed rapidly without losing or gaining any heat to or from the surroundings.
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A therm is a unit of measure for gas. Mrs Schertz’ natural gas usage was 74 therms for the month of March. 49 therms were charged at the baseline charge of $0.74/therm and 25 therms were charged at over baseline charge of $0.98 per therm.
a) What was the total price of the natural gas for the month?
b) There are 4 people living in her home. How many therms per capita?
To calculate the total price of natural gas for the month, we need to multiply the number of therms charged at the baseline rate by the baseline rate and the number of therms charged at the over baseline rate by the over baseline rate, and then add these two amounts together.
So, the total cost of natural gas for the month is:
49 therms x $0.74/therm + 25 therms x $0.98/therm
= $36.26 + $24.50 = $60.76
Therefore, the total price of natural gas for the month was $60.76.
To calculate the therms per capita, we need to divide the total number of therms used by the number of people living in Mrs. Schertz's home.
So, the therms per capita is:
74 therms / 4 people = 18.5 therms/person
Therefore, the therms per capita for Mrs. Schertz's household is 18.5 therms per person.
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Acceleration due to gravity is 9.8 m/s2 on the surface of Earth, and at orbits 200 miles above the surface of Earth, where the space shuttle orbits, the acceleration is
Acceleration due to gravity is 9.8 m/s2 on the surface of Earth, and at orbits 200 miles above the surface of Earth, where the space shuttle orbits, the acceleration is 8.78 m/s².
What is gravitational force?The reason for this difference in acceleration is that the gravitational force on an object is inversely proportional to the square of the distance between them.
Thus, the further an object is from the Earth's surface, the weaker the gravitational force acting on it. This is why objects in orbit around the Earth experience less acceleration due to gravity than objects on the surface of the Earth.
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A 91-kg hockey player on the austin bats team is at rest on the ice if he throws a 4 kg rock at 2.1 m/s. what is the resulting speed of the hockey player in m/s
это действие является рективным, формула которой такова: m1×v1 = – m2×v2
m1 - масса игрока
m2 - масса шайбы
v1 - скорость игрока
v2 - скорост шайбы.
отсюда, скорост игрокa: v1 = (m2×v2):m1 = 0.092 m/s
yoda is 500km above the surface of the earth. if yoda have a mass of 96kg, what speed must he have to stay in a circular orbit around the earth at that altitude.
To stay in a circular orbit around the Earth at 500 km altitude, Yoda must have a speed of 7.9 km/s. Yoda must be moving at a speed of approximately 7,901 m/s to stay in a circular orbit around the Earth at an altitude of 500 km.
The altitude of Yoda above the surface of the Earth is 500km. To stay in a circular orbit around the Earth at that altitude, Yoda needs a certain speed. What is that speed? The answer is that the speed that Yoda needs to stay in a circular orbit around the Earth at an altitude of 500km is 7793.61 m/s.To stay in a circular orbit around the Earth at a constant altitude of 500 km, Yoda must be moving at a specific speed, known as the orbital velocity. This velocity is determined by the gravitational force between Yoda and the Earth, which must balance the centrifugal force of Yoda's motion around the Earth.
The orbital velocity can be calculated using the following equation:
v = sqrt(GM/r)
where v is the orbital velocity, G is the gravitational constant, M is the mass of the Earth, and r is the distance from the center of the Earth to Yoda's position, which is the sum of the Earth's radius and Yoda's altitude above the surface.
Substituting the given values, we have:
v = sqrt((6.6743 x 10^-11 m^3 kg^-1 s^-2) x (5.9722 x 10^24 kg) / (6,371 km + 500 km))
Note that we have converted the altitude of Yoda into kilometers and added it to the radius of the Earth (6,371 km) to obtain the distance from the center of the Earth to Yoda's position.
Simplifying the equation, we get:
v = sqrt(3.986 x 10^14 m^3 s^-2)
v ≈ 7,901 m/s
Therefore, Yoda must be moving at a speed of approximately 7,901 m/s to stay in a circular orbit around the Earth at an altitude of 500 km.
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A girl cycles a distance of 50 meters using a total force on the pedals of 150 N. Calculate the work done on the bicycle. (don't forget the units on your answer)
ASAP!!!PLEASE HELP!!
Explanation:
Please give a brainliest answer
A conducting ring sits in a magnetic field directed into the page that is decreasing in magnitude as a function of time. Is a current induced in the ring? If so, what is the direction of current induced in the ring?
(a) clockwise
(b) counterclockwise
(c) The induced current is zero.
A conducting ring sits in a magnetic field directed into the page that is decreasing in magnitude as a function of time. A current induced in the ring, the direction of current induced in the ring is b. counterclockwise.
Electromagnetic induction is a phenomenon where an electromotive force (EMF) is produced in a closed-loop wire when there is a change in the magnetic field within the loop. Electromagnetic induction is based on Faraday's Law, which is one of Maxwell's equations. It's named after Michael Faraday, who discovered it. The magnetic flux through the loop (N = number of turns) and the time rate of change of the magnetic field (ΦB) is what produces the EMF, according to Faraday's Law.
The Faraday's Law is shown below:- ε = -N (dΦB / dt)Where ε is the EMF and ΦB is the magnetic flux. The negative sign indicates that the EMF's direction opposes the change in magnetic flux, according to Lenz's Law. A conducting ring sits in a magnetic field directed into the page that is decreasing in magnitude as a function of time. Is a current induced in the ring? Yes, a current is induced in the ring.What is the direction of current induced in the ring?The induced current in the ring is counterclockwise.
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A 200 g air-track glider is attached to a spring. The glider is pushed 10.0 cm against the spring, then released. A student with a stopwatch finds that 10 oscillations take 12.0 s. What is the spring constant? A 200 g ball is tied to a string. It is pulled to an angle of 8.00degree and released to swing as a pendulum. A student with a stopwatch finds that 10 oscillations take 12.0 s. How long is the string?
The spring constant of spring is 39.9 N/m and the length of the string is about 47.5 meters.
What is spring constant?Mass of the air-track glider (m) = 200 g = 0.2 kg
Displacement of the air-track glider (x) = 10.0 cm = 0.1 m
Number of oscillations (n) = 10
Time taken for 10 oscillations (t) = 12.0 s
T = 2π√(m/k)
where, T is the time period of oscillation. Substituting the given values, we get:
12 s = 2π√(0.2 / k)
Solving for k, we get:
The spring constant is 39.9 N/m.
Mass of the ball (m) = 200 g = 0.2 kg
Angle of displacement (θ) = 8.00°
Number of oscillations (n) = 10
Time taken for 10 oscillations (t) = 12.0 s
T = 2π√(L/g)
where, T is the time period of oscillation and g is the acceleration due to gravity. Substituting the given values, we get:
12 s = 2π√(L/9.8)
Solving for L, we get:
L = (12/2π)² × 9.8 = 47.5 m
Therefore, the length of the string is 47.5 meters.
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what is the difference between polarized and non polarized?
Polarized and non-polarized refer to the nature of the electric charge distribution in a molecule, electromagnetic wave, or electronic component. Polarization creates a dipole moment, while non-polarization has a neutral distribution of charges.
Polarized and non-polarized are terms that are often used in the field of electricity, electronics, and physics. These terms refer to the nature of the electric charge distribution in a molecule or object. Polarization refers to the separation of positive and negative charges, which creates a dipole moment, whereas non-polarization refers to a neutral distribution of charges.
In chemistry, polar molecules have a non-uniform distribution of electrons, which leads to an unequal sharing of electrons between atoms. In other words, one atom in the molecule attracts electrons more strongly than the other, creating a partial positive and negative charge separation. For example, water is a polar molecule because oxygen has a higher electronegativity than hydrogen, leading to a dipole moment. On the other hand, molecules like carbon dioxide are non-polar because the electronegativity of carbon and oxygen are similar, leading to a neutral distribution of charges.
In physics, polarization refers to the orientation of the electric field vector of an electromagnetic wave. A polarized wave oscillates in a fixed plane, whereas a non-polarized wave oscillates in multiple planes. Polarized waves are often used in optical applications like sunglasses to reduce glare and enhance contrast.
In electronics, polarized components like capacitors, diodes, and electrolytic capacitors have a defined positive and negative orientation. Installing these components backward can cause failure or damage to the circuit. Non-polarized components like resistors and ceramic capacitors can be installed in any orientation since they have no polarity.
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2.1 What is meant by triboelectric charging?
Answer:
Explanation:
The triboelectric effect (also known as triboelectric charging) is a type of contact electrification on which certain materials become electrically charged after they are separated from a different material with which they were in contact.
A horizontal force of magnitude 35.0N pushes a block of mass 4.00kg across a floor where the coefficient of kinetic friction is 0.600. (a) how much work is done by the applied force on the block-floor system when the block slides through a displacement of 3.00m across the floor? (b) during that displacement the thermal energy if the block increases by 40.0J. what is the increase in thermal energy of the floor? (c) what is the increase in the kinetic energy of the block?
Answer to following (a) , (b) and (c) question are: 63.00 J, 40.0 J, 63.00 J
(a) The work done by the applied force on the block-floor system when the block slides through a displacement of 3.00m across the floor can be calculated by multiplying the applied force (35.0 N) and the displacement (3.00 m), with a coefficient of kinetic friction (0.600) for the system. Thus, the work done is 35.0N * 3.00m * 0.600 = 63.00 J.
(b) The increase in the thermal energy of the floor during the displacement of 3.00m is equal to the thermal energy of the block (40.0 J), since the total thermal energy of the block-floor system remains constant. Therefore, the increase in thermal energy of the floor is 40.0 J.
(c) The increase in the kinetic energy of the block is equal to the work done by the applied force, i.e., 63.00 J.
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in an experiment, two objects, object x x and object y y , travel toward each other and collide. data are collected about each object before, during, and after the collision to create a graph that shows the momenta of object x x and object y y as a function of time. how should a student use the data found on the graph to verify the conservation of momentum?
To verify the conservation of momentum in an experiment, a student can use the data found on the graph by analyzing the slopes of the momentum vs. time curves for each object. According to the law of conservation of momentum, the total momentum of a closed system should remain constant before and after a collision.
Before the collision, the total momentum of the system can be calculated by adding the momenta of object x and object y. The sum of the two momenta should remain constant throughout the collision and after the collision.
During the collision, the momenta of object x and object y will change as they interact with each other. The slopes of the momentum vs. time curves during this time period can be analyzed to determine the rate of change of momentum for each object.
After the collision, the total momentum of the system can be calculated again by adding the momenta of object x and object y. If the sum of the two momenta is the same as the total momentum before the collision, then the conservation of momentum has been verified.
In summary, a student can use the data found on the graph to verify the conservation of momentum by analyzing the slopes of the momentum vs. time curves for each object before, during, and after the collision, and by calculating the total momentum of the system before and after the collision.
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