A proton charge travelling perpendicular to a magnetic field experience the same force as an alpha particle charge 2e which is also travelling perpendicular to the same field find the ratio of their speeds is v proton bi vi alpha

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?