Can somebody help me understand this

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

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