Which statements correctly compare the gravitational force with the electrical force?

a. the gravitational force can be repulsive.
b. the gravitational force can be attractive.
c. the electrical force can be repulsive.
d. the electrical force can be attractive.
e. any two objects experience a gravitational force between them.
f. any two objects experience an electrical force between them.

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

How do you tell if someone actually cares about you? and just say they do?