What happens when an atom is exposed to an energy source such as electricity?

the electrons may jump to a higher energy level.
the electrons move closer to the nucleus.
the electrons may move to a lower energy level.
the electrons emit a continuous spectrum.

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)

Observations show that interstellar clouds can have almost any shape and

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory