What is the mass of unmelted ice, if any, when the system is at equilibrium?

How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?