Question

Two stones of masses m and 2m are projected vertically upwards so as to reach the same height.The ratio of kinetic energies of their projection is​

Answer 1

Answer:

Hey, here is ur ans

Using v^2 - u^2 = 2gh, we can conclude that if they reach same height their initial velocity must be same. So KEKE will be ratio of their masses i.e. (KEKE of m) :(m):( KEKE of 2m2m)= m : 2m = 1:2 =m:2m=1:2

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Answer 2

Answer:

The rule is the right hand palm rule, which states, 'Grasp the conductor in the right hand' with the thumb pointing in the direction of current, then the direction in which the fingers curl gives the direction of the magnetic field.

Explanation:

To