Physics, 30.09.2019 07:30 carsondelane13
A4-kg cat is resting on a bookshelf that is 2 m high. what is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8m/s^2?
a. 6 j
b. 8 j
c. 20 j
d. 78 j
Answers: 1
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1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?
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Frequency of electromagnetic waves that a radio station is assigned is called
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Physics, 22.06.2019 22:30
Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.
Answers: 1
A4-kg cat is resting on a bookshelf that is 2 m high. what is the cats gravitational potential energ...
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