If 5800 J of work is done when a person pushes a refrigerator weighing 720 N across a floor where the
force of friction between the refrigerator and the floor is
480 N, how far is the refrigerator going to move?

What is the answer

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

Orange juice has a lower or higher viscosity than chocolate syrup

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical