2.60 The velocity associated with a proton moving in a potential difference of 1000 V is 4.37 × 105 ms–1. If the hockey ball of mass 0.1 kg is moving with this velocity, calcualte the wavelength associated with this velocity.

According to de Broglie’s expression,
λ=hmv
Substituting the values in the expression,
λ=6.626x10-34Js0.1kg4.37x105m/s
λ=1.516x10-38m