A hot tub containing 1000 liters of water has an electric heater rated at 4184 Watts. When running the heater at this rate, how many degrees per hour will the temperature of the water climb? Express your answer in degrees Celsius, Kelvin, and Fahrenheit.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

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.