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What is the name of the condition when the average velocity of atmospheric molecules around you is not zero?
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∙ 12y ago
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Wiki User
∙ 12y ago
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How is it possible for a car to have an average velocity of zero and an average speed of 65 mph?
If the car has an average speed of 65 mph, when it returns to its starting point, it will have a displacement of zero and an average velocity of zero, because velocity has both speed and direction.
The average vibration of molecules in an object is measured by?
temperature!
What is average acceleration?
the ratio of the total change in velocity of the object during motion to the total time taken.
What is the change in velocity divided by the time interval in which the change occured?
It is acceleration. The difference between final velocity and initial velocity, divided by the time is the AVERAGE acceleration. Remember, though that velocity is a vector. So if you are going round in a circle at a constant speed, your direction of motion is changing continuously and so you are always accelerating!
How can you find kinetic energy?
Heat is just the measure of the average kinetic energy of the molecules in... whatever you are measuring. Kinetic energy is s form of energy, so the fact that the molecules have kinetic energy proves heat is energy. Also heat powered engines do work by converting heat into kinetic energy. ============================ Thanks for that. But how do you prove that heat is a form of energy ? ============================
Why is the average velocity of the molecules in a gas is zero but the average of the square velocity not zero?
The gas molecules are in motion but if the total gas volume is stationary (Eg. closed in a container) the average gas velocity is zero. And since the square of any number is never negative. And not all molecules have zero velocity at a time. Therefore, since not all numbers are zero and no number is negative the the average of numbers should be a positive number and will not be zero.
Why average velocity of molecules of a gas is zero but the square of average velocity is not zero?
It depends on the sign of velocities. For example, if there are two velocities 7 and -7 m/s then the average velocity of the molecules will be 0. But, the square will be 49. The general thing here is that even if a velocity is negative, the square of EVERY velocity irrespective of the sign is positive i.e., squaring always removes the negative sign.
Why average velocity of molecules in gas zero whereas the average square of velocity is not zero?
Because squaring a velocity removes its sign. A velocity may be negative, but it's square is always positive. If two velocities are +5 and -5, their average is zero. But both squares are +25, so the average square is +25.
The average kinetic energy of the molecules in an object is what law of thermodynamics?
The root mean square of the velocity.
What is the ratio of the average velocity of hydrogen molecules to that of neon atoms at the same temperature and pressure?
3.16:1
What is the measure of the average kinetic energy of molecules in the air?
mean free path and RMS velocity .............................................................GHo$t
What is the average speed in meters per second at 20 degrees Celsius the average velocity of N2 molecules in air is 1050 mph?
469.4 m/s
When average velocity and average speed is equal?
For the instantaneous value of average velocity, average speed and average velocity are equal.
How is velocity different from average speeed?
Velocity is speed and its direction. Average velocity is average speed and its direction.
When is the average velocity equal to average of velocity for an object?
Always.
What has a higher velocity helium or oxygen?
At the same temperature and prssure in a gas the helium atoms will on average move faster than the O2 molecules.
What is average velocity?
Average velocity is def.ined as the ratio of total displacement to total time taken.
