Physics, 31.12.2020 19:40 ndurairajownkpq
You are going 30 m/s in a car of mass 1000 kg when you reach a red light and stop your car.
a. How much heat energy is released by the brakes of your car?
b. If your car could recapture 40% of the heat energy released from your brakes, how much energywould you recapture?
c. Imagine that you have an electric car and all of the recaptured energy is put back into the battery that powers your car. What speed could your car achieve from rest by using only the recaptured energy from part (b)
Answers: 2
Physics, 22.06.2019 10:30
Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?
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Physics, 22.06.2019 17:30
Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.
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First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.
Answers: 2
You are going 30 m/s in a car of mass 1000 kg when you reach a red light and stop your car.
a. How...
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