A snow machine sprays artificial snow at a rate of 4 g/s (grams per second) and a velocity of 6m/s What is the horizontal force exerted by the snow machine on the ground?

[1 mark]

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

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?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects