Two cars are travelling in the +x direction. A 1.8 x 103 kg BMW with speed 42 m/s hits the rear of a 1.2 x 103 kg VW with speed 25m/s. Neither driver applies the brakes. Ignore friction. a. If the speed of the BMW is 33 m/s just after the collision, find the speed of the VW just after the collision

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

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?

It is really hard for me right know