The pulley has a radius of 15 cm and a mass of 350 grams. The 100 gram box is released from rest. As it falls 80 cm, it causes the pulley to rotate. a. How much gravitational potential energy did the box lose as it fell 80 cm?

b. What is the rotational inertia of the pulley?

c. What is the speed of the box after it has descended 80 cm?

d. What is the angular speed of the pulley?

e. How much rotational kinetic energy does the pulley have?

Depending on how the continental plates move it can cause a continental scale shift.

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.