What is the main reason why would a fan be expected to warm the air that passes through it? A or B? A. The fan does work on the air in the room leading to an increase in its thermal energy and temperature.
B. The fan transfers heat to the air in the room leading to an increase in its thermal energy and temperature.

The table below shows the acceleration of gravity on different bodies in the solar system. on which body would a 10 kg lamp has the most gravitational potential energy when lifted to a height of 2 m? a. earth b. mars c. neptune d. uranus

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.

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?