#1: if an electron gains energy, what may happen to it?

a. it may move to a higher energy level.

b. it may drop to a lower energy level.

c. it will never change location

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

Select the three ways that the parallel-plate capacitor differs from a car battery.

What accounts for an increase in the temperature of a gas that is kept at constant volume? a. energy has been removed as heat from the gas. b. energy has been added as heat to the gas. c. energy has been removed as work done by the gas. d. energy has been added as work done by the gas.