Question

.The mass of an electron is 9.11 x 10-31Kg .If its K.E is 3x 10 -25J ,Then calculate its velocity.

Answer 1

Answer:

Explanation:

MASS OF ELECTRON=9.11*10^-31  KG

KINETIC ENERGY=3*10^-25 J

WE KNOW,

KINETIC ENERGY=[1/2] MV²

3*10^-25=0.5*9.11*10^-31*V²

V²=0.66*10^6

V=0.812*10^3

V= 812 M/S.

HOPE THIS HELPS.