Breanna is standing beside a merry-go-round pushing 19° from the tangential direction and is able to accelerate the ride and her friends from rest to a frequency of 10 rpm in 9 seconds. assume the merry-go-round is a uniform disc of radius 2.3 m and has a mass of 750 kg. rachel (48 kg) and tayler (46 kg) sit opposite each other on the edge of the ride. what force did elizabeth push with? (n) (include units with answer) how much work did elizabeth do? (j) (include units with answer)

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.