Question

Rutherford's alpha scattering experiment using gold foil, the kinetic energy of the alpha particle was 1.2 x 10-12J. For a head on collision, using the formula K.E. =
1
4
πε
0
x 2Ze2/r0 , what may be the magnitude of r0 [ The nuclear radius of gold, Z=79;
1
4
πε
0
= 9 x 109 new-ton/meter2 coulomb-2, e= 1.6x10-19 coulomb]​

Answer 1

Answer:

An acceleration can cause speed to increase, decrease, and even stay the same! Acceleration tells you the rate at which the velocity is changing. ... The acceleration can change the magnitude and/or the direction of the velocity. Speed is only the magnitude of the velocity.