How would the mass of an object be different if it were on the moon instead of on earth?
a. the mass would be the same on earth.
b. the object would not have mass on the moon.
c. the mass would be less than it would be on earth.
d. the mass would be greater than it would be on earth.

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system