Answer: To calculate the height of the mountain, you can use the fact that atmospheric pressure decreases with increasing altitude. This relationship is described by the equation:
P = P0 * e^(-h/H)
where P is the atmospheric pressure at a given altitude, P0 is the atmospheric pressure at sea level, h is the altitude, and H is a constant known as the scale height.
Since the atmospheric pressure at the top of the mountain is known (760mmHg), and the atmospheric pressure at sea level is a standard value (approximately 101325 Pa), we can rearrange the above equation to solve for h:
h = -H * ln(P/P0)
Plugging in the known values, we have:
h = -H * ln(760mmHg / 101325 Pa)
= -H * ln(0.00750062)
The scale height of the atmosphere can be calculated using the ideal gas law:
H = RT / g
where R is the universal gas constant, T is the temperature of the air, and g is the acceleration due to gravity.
Plugging in the known values, we have:
H = (8.31 J/mol*K) * (288 K) / (9.81 m/s^2)
= 7478.9 m
Substituting this value back into the equation for h gives:
h = -7478.9 m * ln(0.00750062)
= -7478.9 m * (-3.876)
= 28934.7 m
Therefore, the height of the mountain is approximately 28,934 meters.
Adaline walks 2.0 miles north to school from her house. After school, she walks 2.0 miles south from the school to her house. What is her displacement?
0 miles
1.0 miles, north
2.0 miles, south
4.0 miles, north
0 miles
Explanation:
delta displacment=position end-position beginning
The displacement of Adaline if she walks 2.0 miles north to school from her house. After school, she walks 2.0 miles south from the school to her house is zero miles so, option A is correct.
What is displacement?The overall modification of an object's location and direction of motion is referred to as displacement. Since displacement considers both the amount of the changing location and the direction of the motion, it is known as a vector quantity. There may be zero, positive, or negative displacement.
Given:
Adaline walks 2.0 miles north to school from her house. After school, she walks 2.0 miles south from the school to her house,
Calculate the displacement as shown below,
Displacement = Distance from house to school + Distance from school to house,
Displacement = 2 + (-2) (North direction is taken as positive and south direction is taken as negative)
Displacement = 0 miles
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Two forces of 5N and 12N act at a point The two force first act in opposite directions
a, Make a sketch showing the direction of the forces.
b, calculate the resultant of the forces and mark its direction on your sketch.
The resultant of the force that acts in opposite directions is 7 N.
What is the resultant force?We know that the resultant force is the force that has the same effect in magnitude and direction as two or more forces that is acting together. We have to note that the force that is actinmg on an object is a vector quantity. The implication of this is that the magnitude and the direction of the forces that are acting on the body is very important.
By the use of the law of vectors we can be able to write in the case of the question that we have here, we can see that the forces are acting in the opposite directions. The implication of this is that we would have to subtract the forces so as obtain the resultant force.
We have to note that when we have opposite forces, one is said to be positive and the other negative and the resultant force can be found by subtraction. As such the resultant force can be obtained from;
Let the +B force be 12 N
Let the -B force be 5N
12 N - 5 N = 7 N
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when the distance between two masses doubles, the strength of the gravitational force between them ―
When the distance between two masses doubles, the strength of the gravitational force between them is decreased by a factor of 4.
Gravitational Force:
Any two mass-containing objects are attracted to one another by gravitational force. Because it consistently attempts to pull masses together rather than pushing them apart, the gravitational force is known as attractive. In reality, everything in the cosmos is tugging on everything else, including you! Newton's Universal Law of Gravitation is what it is known. Admittedly, you aren't pushing on those other objects all that much because you don't have a very large mass. Additionally, items that are very far apart from one another do not clearly tug on one another. However, we can calculate the force because it exists.
It is given by,
[tex]F=\frac{GMm}{r^{2} }[/tex]
We can clearly evaluate from the above formula that
[tex]F[/tex] ∝ [tex]\frac{1}{r^{2} }[/tex]
So,
When the distance between two masses doubles, the strength of the gravitational force between them is decreased by a factor of 4.
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The radioactive hydrogen isotope 3h is called tritium. it decays by beta-minus decay with a half-life of 12.3 years. What is the daughter nucleus of tritium?
The daughter nucleus of tritium is a helium nucleus with two protons and two neutrons.
What is tritium?It is an isotope of hydrogen. During decay, Tritium nucleus emits an electron and an antineutrino, and changes it from a Tritium with one proton and two neutrons, to a Helium nucleus with two protons and one neutron.
What is helium?Helium is an inert gas.
What is nucleus?Nucleus is positively charged mass at the centre of the atom consisting of positively charged protons and neutral neutrons.
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3. You drive on NH-4 from New Delhi to Agra, half the time at 55 km/h and the other half at 90 km/h. On the way back you travel half the distance at 55 km/h and the other half at 90 km/h. What is your average speed (a) from New Delhi to Agra, (b) from Agra to New Delhi, (c) for the entire trip? (d) What is your average velocity for the entire trip?
Answer:
below
Explanation:
d = distance from ND to A
Average speed = total d / total time
a) total distance = d
= 1/2 t * 55 + 1/2 t * 90 total time = t
average speed = d / t = (1/2 t *55 + 1/2 t*90) / t
= 1/2 *55 + 1/2 * 90 = 72.5 km/hr av
b) time at 55 = 1/2d /55 time at 90 = 1/2 d 90
rate = d / t = d /( 1/2 d 55 + 1/2 d 90) = 1 / ( 1/110 + 1/180) = 68.3 avg
c) and d) are the same question?
total d /total time = avg 2d /( d / 72.5 + d/ 68.3) = 70.3 km/hr
Police are reinvestigating a cold case from 10 years ago. They have exhumed the body and an autopsy is being performed. The forensic scientist detected a poison in the bones of the body, which led to an eventual arrest of a suspect. What poison was MOST likely found?
A. cyanide
B.arsenic
C.mercury
D. strychnine
The poison was most likely found was B)arsenic
What is poisioning?
Poisoning is defined as harm or death brought on by ingesting, inhaling, touching, injecting, or ingesting different medications, chemicals, venoms, or gases. Many chemicals, including pharmaceuticals and carbon monoxide, become dangerous only when they are consumed in large quantities. While some cleaners only cause harm when consumed, others also release hazardous vapors or fumes.
When large doses of arsenic are ingested or inhaled, arsenic poisoning, also known as arsenicosis, occurs. Gray, silver, or white in hue, arsenic is a form of carcinogen. For humans, arsenic is exceedingly dangerous. Because it has no taste or odor, arsenic is particularly hazardous because you can be exposed to it covertly. After death, the toxin leaves residues on the body.
Hence the poison was most likely found was B)arsenic
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2. An energetic golden hamster (Mesocricetus auratus) is running at a
constant speed on its frictionless exercise wheel (25.0 cm diameter,
weighing 25.0 g). If the hamster is considered part of the exercise wheel
system (his efforts are internal to the system), how much work is being
done on the hamster-wheel system?
The work done by the hamster-wheel system is 0.0625 J.
What is work done in a system or by a system?The work done by a system or on a system is a measure of the energy input used to do useful work such as moving an object a given distance when force is applied.
Work done is defined as the product of the force applied and the distance moved by the force applied in the direction of the applied force.
Mathematically;
work done = force * distanceThe unit of the applied force is Newton; the unit of the distance moved is in meters and the unit of measurement of work done is Joules.
The work done by the hamster-wheel system is given below:
Force of the hamster = mass * acceleration due to gravity
Force on hamster = 25/ 1000 * 10
Force = 0.25 N
Distance = 25.0 cm or 0.25 m
Work done = 0.25 * 0.25
Work done = 0.0625 J
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A ball rolled toward Manny while he was playing soccer. If Manny’s foot kicks the ball as shown in the picture, which will most likely happen to the ball?
answer choices
- The ball will stop rolling.
- The ball will roll toward the east.
- The ball will continue rolling west.
- The ball will go straight up in the air.
Answer:
no photo
Explanation:
sorry i cannot see a photo can you send it to me?
when you looked at solar activity on the heliophysics event registry website, on which date did you find activity on the sun?
You did look at solar activity on the heliophysics event registry website, and we found activity on the sun on the specified day.
What three sorts of solar occurrences are there?Any natural occurrence in the upper atmosphere of the sun is referred to as a solar phenomenon. Solar flares, prominences and filaments, and coronal mass ejections are three different categories of solar phenomena.
How can I follow the cycle of solar activity the best?The simplest way we can investigate how solar activity changes over time is to survey sunspots, which is also how we track the solar cycle. Sunspots are associated with the Sun's natural 11-year cycle, during which the planet's surface changes from calm to turbulent.
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If an object has constant velocity, then one can be sure that the object is not ____.
Answer:
accelerating
Explanation:
untill an unbalanced force acting on a body, object at rest remain stationery while object on motion continue moving in constant velocity.
no resultant force means no acceleration.
a vertical spring scale can measure weights up to 210 n . the scale extends by an amount of 13.5 cm from its equilibrium position at 0 n to the 210 n mark. a fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.15 hz . part a ignoring the mass of the spring, what is the mass m of the fish?
sheesh sheesh
Explanation:
a positive charge is moving to the right and experiences an upward magnetic force. in which direction must the magnetic field have a component?
The rightward motion of a positive charge is accompanied by an upward magnetic pull. There must be a component of the magnetic field that enters the page.
How does magnetic force work?The total force operating on an electric charge can be expressed as the sum of the electric force and the magnetic force acting on the object if a point charge q is placed in the presence of both a magnetic field of magnitude B (r) and an electric field of magnitude E (r).
How does a magnetic field respond to an electric current?Electric Field A magnetic field forms around a wire when an electric current flows through it. The magnetic field also creates a ring of concentric circles around the wire.
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an object in shm oscillates with a period of 4.0 s and an amplitude of 16 cm. part a how long does the object take to move from x
The object takes to move is 0.409s.
Calculaiton:
time period T = 4 s
Angular speed ω = 2π/T= 1.57 rad/s
SHM equation
x = A sin ωt
6 = 10 sin(1.57t)
sin(1.57t) = 0.6
1.57 t = 0.6435
t= 0.409s.
The amplitude of a periodic variable is a measure of its change over one period. The amplitude of an aperiodic signal is its magnitude relative to a reference value. Amplitude has various definitions, all of which are functions of the magnitude of the difference between extreme values of a variable. It refers to the maximum displacement from equilibrium exhibited by a body in periodic motion.
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3. A car travels 64.4 km in 0.5 hr. Calculate the car's average speed in km/hr.
Answer:
128.8Km/h
Explanation:
S=d/t
=64.4/0.5
=128.8
what should the rotation curve for this galaxy look like for radii larger than 5 kpc, do you think? after 5kpc...
The rotation curve for this galaxy look like for raddi larger than 5kpc is angular velocity.
What is angular velocity?Angular velocity is the speed at which the angle between 2 bodies changed whenever an object rotated or revolvers around an axis. This displacements is depicted in the images by the angle firmed by a line on one body andar a line on the other.
Angular velocity can be defined as the Speed at which an item rotates or revolvers around an axis. The Greeks letter Omega (occasionally ) stands for angular velocity. The SI unit for angular velocity is radians per second because it is the expressed as an angle per unit of times.
Orbital speed increase with radius beacuse it is directly proportional to radius
Since V=wr
So on increasing with radius orbital speed also increases.
So here w is angular velocity.
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a 40cm diameter wheel accelerates uniformly from 240 rpm to 360 rpm in 6.5 seconds. how far will a point on the edge of the wheel have traveled in this time
Answer:
S = V1 t + 1/2 a t^2 distance traveled for linear acceleration
θ = ω1 t + 1/2 α t^2 equivalent angle for rotational acceleration
ω1 = 240 / min * 2 π * 240 / (60 s/min) = 8 π / s
ω2 = 360 rpm = 12 π / s
α = 4 π/ 6.5 s^2 = .62 π / s^2 angular acceleration
θ = 8 π / s 6.5 s + .62 π / 2 * 6.5^2
θ = 52 π + 13 π = 65 π = 65 * π / (2 π / rev) = 32.5 rev
1 rev = 2 * π * R = 2 * π * .4 m = 2.51 m / rev
S = 32.5 rev * 2.5 m/rev = 81 m
Which two waves
combine to form a surface wave?
•
two transverse waves
•
two longitudinal waves
O a transverse wave
a and a longitudinal wave
a transverse wave and a light wave
A surface wave is a combination of a transverse wave and a longitudinal wave
What is a surface wave?A surface wave is a mechanical wave that propagates along the interface between differing media. A surface wave is made up of transverse and longitudinal wave
A transverse wave is a wave in which particles of the medium move up and down perpendicular to the direction of the wave. A longitudinal wave is a wave in which particles of the medium move parallel to the direction of the wave.
Surface waves usually have larger amplitudes and longer wavelengths than body waves, and they travel more slowly than body waves do.
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a hockey puck is hit on a frozen lake and starts moving with a speed of 13.20 m/s. exactly 5.6 s later, its speed is 6.60 m/s. what is the puck's average acceleration?
-1.17 is the average acceleration when a hockey puck is hit on a frozen lake and starts moving with a speed of 13.20 m/s. Perfectly,5.6 s later, its speed is 6.60 m/s.
What is an average acceleration?The rate of change in velocity, or the change in velocity per unit time, is known as average acceleration. The square of the distance over time is used to measure acceleration. Hence, the unit of acceleration is known to be as m/[tex]s^{2}[/tex]. Average is read as a symbol with a bar over it, so a-bar represents average acceleration.Solution:Given:
Initial sped =13.20m/sFinal speed=6.60m/stime taken=5.6sNow, to find the average acceleration we use the following formula;
Acceleration, [tex]a_{avg}[/tex] =[tex]\frac{v^{final}-v^{initial} }{time}[/tex]
⇒[tex]a_{avg}[/tex]=6.60-13.20/5.6 = -1.17m/[tex]s^{2}[/tex]
Hence, -1.17 is the average acceleration when a hockey puck is hit on a frozen lake and starts moving with a speed of 13.20 m/s. Perfectly, 5.6 s later, its speed is 6.60 m/s.
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Question 8 of 10
Based on the diagram, which statement explains how energy is conserved
during this chemical reaction?
A
Potential energy
of a system
I
1
I
1
Reaction progress
B
C
OA. The potential energy lost by the reaction system (C) is gained by
the surroundings.
B. The potential energy changes indicated by A and B involve energy
lost by the surroundings.
OC. The potential energy gained by the reaction system (A) is lost from
the surroundings.
OD. The potential energy lost during the formation of products (B) is
lost by the surroundings.
Jy
SUBMIT
The statement that explains how energy is conserved during this chemical reaction is " The potential energy lost by the reaction system (C) is gained by the surroundings".
option A is the correct answer.
What is law of conservation of energy?
The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.
Based on the law of conservation of energy, the potential energy of a system can be converted into kinetic energy or heat energy gained by the surrounding.
ΔP.E = ΔH
Pf - Pi = C
where;
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a dog lifts a 0.75 kg bone straight up through a distance of 0.11 m. How much work was done by the dog ?
The work done by the dog is 0.81J.
What is work done?Work done is a measure of energy expended in moving an object; most commonly calculated by multiplying the force by the distance.
It is said that no work is done if the object does not move.
The work done on an object is the amount of energy transferred to an object through work.
According to this question, a dog lifts a 0.75 kg bone straight up through a distance of 0.11 m. The force applied to break the bone must be calculated first as follows:
Force = mass × acceleration
Force = 0.75kg × 9.8m/s²
Force = 7.35N
Work done = 7.35N × 0.11m = 0.81J
Therefore, 0.81J is the work done by the dog.
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John walks to the pizza place for lunch. He walks 2 km north, then 1 km east. To get home, he walks 2 km west and 1 km south. What distance did he travel? What is his displacement?
Answer:
The total distance covered is 3 km and the displacement is 2.24 km.
Explanation:
For the total distance covered by Anthony, we just add all of the distances.
1 km (going east) + 1 km (going east again) + 1 km (going south) = 3 km
Hence, the his total distance covered when he went to the pizza place is 3 km.
Solving for the displacement is a different matter. We cannot just add all of the distances. From analysis of the problem, Anthony traveled and formed a right triangle. He traveled 1 km east twice, making it 2 km east in total, then he traveled 1 km south.
When dealing with a right triangle with 2 sides given (for this problem the two sides are the 2 km east and the 1 km south), we use the Pythagorean Theorem.
Solution:
c² = a² + b² (Pythagorean Theorem)
c will be the longest side of the right triangle
a and b will be the other sides of the right triangle
c = √ (a² + b²)
c = √ (2² km + 1² km)
c = √5 km
c = 2.2361 km ≈ 2.24 km
Therefore, the displacement of Anthony is 2.24 km.
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Find the y-component of this
vector:
42.2°
101 m
Remember, angles are measured from
the +x axis.
Y-component (m)
The y-component of the given vector is 67.84 m.
What is a vector quantity?The quantities that exhibit both magnitude and direction can be defined as vector quantities. For example, a boy is riding a cycle with a velocity of 30 km/hr in a southeast direction. Then to define the velocity, we require two things which are the magnitude of the velocity and the direction. Therefore, it expresses a vector quantity.
The components of the vector can be represented as:
x = r cosθ
y = r sinθ
Given the value of r, = 101 m
The angle, θ = 42.2°
The y-component of this vector can be calculated as:
y = 101 ×sin 42.2°
y = 67.84 m
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5. if the star sirius emits 23 times more energy than the sun, why does the sun appear brighter in the sky? include the terms luminosity and apparent brightness in your response.
The star Sirius is indeed brighter but our Sun appears to be brighter because it is closer to us.
The intrinsic luminosity of Sirius is exactly 25.4 times more than the sun but if we compare the distances of these stars, Sirius is 8.6 light years away from us and the Sun is just 8 light minutes away from us. This marks the obvious reason why our Sun appears more bright.
Even mathematically, it can be justified as the apparent brightness of any luminous object depends on the inverse square of the distance of that luminous object. Therefore the sun's light energy dominates our sky and we can't see any traces of Sirius from the earth.
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100 POINTS AND BRAINLIEST IF YOU CAN ANSWER
On a position vs. time graph for an object, a horizontal line segment indicates that the object is
A. at its starting location.
B. not moving and is at rest.
C. located at ground level.
D. moving at a constant rate.
Answer:
The answer is D. moving at a constant rate.
Explanation:
I've had this question before.
In the position-time graph, the horizontal line segment indicates that the object is not moving and is at rest. Therefore, option (B) is correct.
What is the Position Time Graph?The position vs time graph on which the instantaneous position of a particle is plotted on the y-axis and the time is plotted on the x-axis is called the Position-Time graph.
In the position vs time graph always take an independent variable on the x-axis and dependent variables must be plotted on the y-axis. Through mathematical function, the dependent variable will be dependent on the independent variable.
In the case of the Kinematic equation of uniform acceleration, the position can be defined as a dependent variable and time will be the fundamental independent variable.
The case of the horizontal line in the position vs. time graph indicates that the position of the object is not changing with time so it is at rest.
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Classify the type of reaction below.
C2H6 + O2
--> CO2 + H2O
a. Synthesis
b. Decomposition
c. Combustion
d. Single Replacement
e. Double Replacement
Answer: Synthesis
Explanation: You are combining multiple Elements
after i stops my lexus engine, the warning sign appears when open door, but off when close the door, why?
Your door-ajar light may turn on for a variety of reasons depending on the type of vehicle you drive: a dome light short in terms of electricity. The anti-theft system experienced an electrical short. a door switch that was stuck to the "open" setting.
The effects that an electrical short has.Appliance damage, electrical shock, or even a fire may result from a short circuit. And if you don't take any steps to prevent short circuits, the likelihood that these events will occur will only rise.
An electrical short, also known as a short circuit, is a low-resistance connection between two conductors, which are components allowing electricity to flow through them. A short happens when a current takes an unintended detour instead of taking the intended path.
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.An object has a mass of 10 kg and an acceleration of 20 m/s2. What is the force on the object?
The force acting on the object is 200 Newton.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
Given that mass of the object: m = 10 kg.
acceleration of the object = 20 m/s^2.
Hence, according to Newton's 2nd law of motion:
Force = mass × acceleration
= 10 × 20 Newton
= 200 Newton.
Hence, the force on the object is 200 Newton.
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a car accelerates uniformly from rest to 25 m/s over a distance of 30 meters. what is the acceleration of the car?
Answer:
a=25/24 m/s^2
Explanation:
I’m going to assume you mean the final velocity is 25m/s.
v^2=u^2+2as
625=0+2a300
a=25/24 m/s^2 or 1.0416^_ (period 1) ^m
if we have a system that uses 5 volts with a frequency of 1ghz and the power used is 3 watts, what is the power draw when we increase the frequency to 3ghz?
Processor-A uses 20 W of power components and 80 W cpu dynamic power 3 GHz.
Static power: What does that mean?When there is no design activity occurring, static power—also known as "leakage"—is used up. It closely relates to the transistor's idle current, which is based on the transistor's characteristics.
Power is it static or is it dynamic?While leakage, or the current that passes through a transistor while there is no activity, makes up static power, switching or short-circuit power are components of dynamic power. Any of the following things may influence each power component's value: Activity. Frequency.
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two planets are identical, except planet x has an atmosphere of mostly nitrogen and planet y has an atmosphere of mostly carbon dioxide. what can you determine about the planets
Two planets are identical, except planet x has an atmosphere of mostly nitrogen and planet y has an atmosphere of mostly carbon dioxide therefore what we can determine about the planets is that x is Earth while y is Venus.
What is Atmosphere?This is referred to as the envelope of gases surrounding the earth or another planet and it makes life possible by providing different organisms with air to breathe
In the atmosphere of the planet Venus there is a high concentration of carbon dioxide as it is made up of it is made of 96.5% of CO₂ and a 3% of nitrogen.
On the other hand in the atmosphere of the planet Earth, there is a high concentration of nitrogen which is about 78% and is therefore the reason why they were chosen as the correct choices.
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