2) A vendor pulls a 250N cart filled with pop cases so that it rolls at a constant velocity along a level floor where u=0.2. What is the Force applied by the vendor?

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

How many atoms of nitrogen are in the chemical formula ni(w on