The electric force between two charges increases when A) both charges become negative
B) both charges become positive
C) the charges get closer together
D) the charges get further apart

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Which articulations allow for greatest range of motion?

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these