The earth spins on its axis and also orbits around the sun. for this problem use the following constants. mass of the earth: 5.97 × 1024 kg (assume a uniform mass distribution) radius of the earth: 6371 km distance of earth from sun: 149,600,000 km calculate the rotational kinetic energy of the earth due to rotation about its axis, in joules.

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Why do astronauts in the space shuttle weigh less?

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?