Question

Linear momentum of electron whose kinetic energy is 2mev

Answer 1

Answer:

P = 7.63 x 10∧-22 Ns

Explanation:

m = 9.1 x 10∧-31 kg

K.E = 2 Mev = 2 x 10∧6 x 1.6 x 10∧-19 J = 3.2 x 10∧-13 J

K.E = P² / 2m

P = √2m K.E  ⇒√2x9.1 x 10∧-31x3.2 x 10∧-13

P = 7.63 x 10∧-22 Ns