Sodium is a monovalent metal having a density of 0.971 g/cm3 and a molar
mass of 23.0 g/mol. Use this information to calculate (i) the density of charge
carriers and (ii) the Fermi energy of sodium.
The mass of carbon in an animal bone fragment found in an archaeological site is 200g. If the bone registers an activity of 16 decays/s, what is its age?
A 112 kg man stands 551 m from a building of 25,500 kg. What is the gravitational force of the man due to the building? What is the gravitational force of the building due to the man?
Two 2.5 kg bowling balls are 0.50 m apart. What is the force of gravity of the first bowling ball due to the second? Compare this to the force of gravity on the second bowling ball due to the first.