The root mean square velocity of helium molecules at NTP will be :
The velocities of five molecules of a gas are -10 m/s, 15 m/s, 2m/s, -3 m/s and -4 m/s respectively. the root mean square velocity of molecules will be ____ (in m/s)
A particle of mass 10−2is moving along the positive x - axis under the influence of a force F(x)=−12x2.. At time, t = 0, it is at x = 1.0 m and it is at rest. Find the velocity when it reaches x = 0.5m.