Susie Maroney from Australia set a women's record in long distance swimming by swimming 93.625 km in 24.00 h.

a. What was Maroney's average speed?

b. If Maroney's mass was 55 kg, what was her kinetic energy?

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.