An energy of 30.0 eV is required to ionize a molecule of the gas inside a Geiger tube, thereby producing an ion pair. Suppose a particle of ionizing radiation deposits 0.65 MeV of energy in this Geiger tube. Randomized VariablesE = 0.65 MeV What is the maximum number of ion pairs it can create?

Trace amounts of 7Li were created during Big Bang Nucleosynthesis.  Calculate the binding energy per nucleon for 7Li, in MeV showing two decimal places.  Values:  atomic mass of 7Li = 7.01600 u atomic mass of 7H = 1.00783 u atomic mass of a neutron = 1.00867 u

Outside the nucleus, the neutron itself is radioactive and decays into a proton, an electron, and an antineutrino. The half-life of a neutron (mass = 1.675 × 10-27 kg) outside the nucleus is 10.4 min. On average, over what distance x would a beam of 7.04-eV neutrons travel before the number of neutrons decreased to 75.0% of its initial value? Ignore relativistic effects. X = i

A proton of energy 25 MeV is moving in Pb. How much energy does it lose in a collision with an alpha particle? How many collisions are required to completely stop it?