Atomic and Nuclear Physics Answers

In the rutherford scattering experiment the distance of closest approach for an alpha particle is d. If alpha particle is replaced by a proton, how much kinetic energy in comparison to alpha particle will it require to have the same distance of closest approach d?

If the half-life for polonium-218 is 3.05 minutes. How many half-lives have passed for polonium-218 after 9.15 minutes
How much of an 89.6mg sample polonium-218 would remain after 9.15 minutes

what do you mean by pletaue curve in gamma ray? what is the mass absorption coefficient of gamma rays?what is the half value thickness?

the distance moved per unit of time is

explain how Rutherford's experiment on the scattering of alpha particles led to the estimations of the size of the nucleus ?

explain Rutherford's experiment on the the scattering of alpha particles from a gold foil and state the the significance of the results

why an electron have constant energy when it revolve around nucleus in an orbit

write a note on gravitational red shift.

what is the origion of nuclear force?

75% of a sample was decayed in 24 hours , find the half life of the sample.