Author Question: An alpha particle (mass = 6.68 10-27 kg) is emitted from a radioactive nucleus with an energy of ... (Read 109 times)

silviawilliams41 · **on:** Jul 28, 2018

An alpha particle (mass = 6.68 10-27 kg) is emitted from a radioactive nucleus with an energy of 6.22 MeV. How fast is the alpha particle moving in m/s? (1 MeV = 1.6 10-13 J)
a. 3.70 106 m/s
c. 1.55 107 m/s
b. 1.73 107 m/s
d. 1.85 106 m/s

Question 2

The neutron is radioactive and can beta decay to form a proton. This can occur primarily because:
a. the neutron is neutral.
b. of the binding energy of hydrogen.
c. the proton has less mass than a neutron.
d. there are several hydrogen isotopes.