You and your friend, mountain man mike, are on a white water rafting trip in a steep valley. while boating, you see large rock that smack into the side of the channel. what type of rock do you think you saw ? (a. dissolved) (b. bumpy load ) ( c. bed load ) (d. suspended load)

The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output

In science and physics what is the standard unit of measure for speed?

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.