The available source of charge that pushes a charge through a circuit is
a. resistance.
b. voltage.
c. alternating current.
d. direct current.

The ozone hole appears in antarctica during

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?