A factory replaces two sets of gears in a machine so the gears in each set were touching. Each set has two gears, so there are four gears altogether. In Set A, both gears are the same size. In Set B, the top gear is the same size as the gears in Set A, but the bottom gear is larger than the other three. The diagram above shows the energy of the molecules of the gears before they touched. After a while, which of the two bottom gears will be cooler, and why?

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount

1.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the mass defect of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 2.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 3.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy per nucleon of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev

Why do astronauts in the space shuttle weigh less?