Classify each of the following as True or False. The strong force is responsible for holding the atomic nucleus together. Pure uranium-238 can be used to make a fission bomb. Stable isotopes have long half-lives. A proton is composed of two up-quarks and one down-quark. During beta decay, a proton transforms into a neutron and an electron. Most nuclear power plants use nuclear fusion as their energy source.

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?