How much heat energy is required to raise the temperature of 5 kilograms of coal from 20°c to 220°c?

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

Explain earth's motion, using the terms "precession" and "rotation" in your answer.