why velocities of x rays and gamma rays are same inspite they have different wavelengths and frequencies
both x-rays and gamma radiations are electromagnetic waves and all electromagnetic waves have same speed in vacuume.
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a ball of mass 500g moving with a velocity of 10m/s collides with another ball of mass 250g.after the impact,the second ball moved off with a velocity of 8m/s calculate the final velocity of the first ball.
USE OF PHYSICS
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