Questions from College Physics

Q: Determine the number of (a) Electrons, (

Determine the number of (a) Electrons, (b) Protons, and (c) Neutrons in iron (5626Fe).

Q: If film is kept in a box, alpha particles from a

If film is kept in a box, alpha particles from a radioactive source outside the box cannot expose the film, but beta particles can. Explain.

Q: A 2.0 - MeV neutron is emitted in a fission

A 2.0 - MeV neutron is emitted in a fission reactor. If it loses one - half its kinetic energy in each collision with a moderator atom, how many collisions must it undergo to reach an energy associate...

Q: The fusion reaction 12D + 12D ( 23He + 01n releases 3

The fusion reaction 12D + 12D ( 23He + 01n releases 3.27 MeV of energy. If a fusion reactor operates strictly on the basis of this reaction, (a) how much energy could it produce by completely reacting...

Q: (a) Show that about 1.0 x 1010 J

(a) Show that about 1.0 x 1010 J would be released by the fusion of the deuterons in 1.0 gal of water. Note that 1 of every 6500 hydrogen atoms is a deuteron. (b) The average energy consumption rate o...

Q: The oceans have a volume of 317 million cubic miles and contain

The oceans have a volume of 317 million cubic miles and contain 1.32 x 1021 kg of water. Of all the hydrogen nuclei in this water, 0.0156% are deuterium. (a) If all of these deuterium nuclei were fuse...

Q: A π - meson at rest decays according to π-

A π - meson at rest decays according to π- ( μ- + v-μ What is the energy carried off by the neutrino? Assume the neutrino has no mass and moves off with the speed of light. Take mπc2 = 139.6 MeV and m...

Q: The reaction π- + p ( K0 + Λ0 occurs with

The reaction π- + p ( K0 + Λ0 occurs with high probability, whereas the reaction π- + p ( K0 + n never occurs. Analyze these reactions at the quark level. Show that the first reaction conserves the to...

Q: The sun radiates energy at the rate of 3.85 x

The sun radiates energy at the rate of 3.85 x 1026 W. Suppose the net reaction 4p + 2e- ( α + 2ve + 6( accounts for all the energy released. Calculate the number of protons fused per second. Note: Rec...

Q: Find the energy released in the fission reaction 01n + 23592U

Find the energy released in the fission reaction 01n + 23592U ( 3888Sr + 13654Xe + 12 01n