A flask has 10 molecules out of which four molecules are moving at `7 ms^(-1)` and the remaining ones are moving at same speed of `X ms^(-1)`. If rms of the gas is `5 ms^(-1)`, what is `X` ?
Root mean square speed of a gas is 5 ms^(-1) If some molecules out of 10 molecules in all are moving with 7ms^(-1) and rest all the molecules moving with 3 m sec^(-1) then number of molecules moving with higher speed is ____________.
A man moving with 5 ms^(-1) observes rain falling vertically at the rate of 10 ms^(-1) . Find speed of the rain with respect to ground.
At 27^(@)C a gas contains 10 molecules travelling with a speed of 4 ms^(-1) , 20 molecules travelling with a speed of 5 m s^(-1) and 40 molecules travelling with a speed of 8 m s^(-1) . Calculate the average speed, root mean square speed and most probable speed of the gas at 27^(@)C .
A circular wheel of 0.50 m radius is moving with a speed of 10 ms^(-1) . Find the angular speed.
What is the de-Broglie wavelength associated with an electron moving with a speed of 5.4 xx 10^6 ms^(-1) ?
Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms^(-1) . It implies that the boy is
The speed of sound waves in air at 300 K is 248 ms^(-1) . At what temperature will the speed be 402 ms^(-1) .
The r.m.s. velocity of the molecules of a gas at S.T.P. is 485.6 ms^(-1) . Calculate the density of the gas.
