Physics
Physics, 03.07.2019 13:50, msjbryant33

An ice cube melts when its a. electromagnetic energy increases b. thermal energy increases c. mechanical energy decreases d. thermal energy decreases

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Biology, 29.06.2019 19:30, Worksmarter72641
Mechanical energy is defined as the sum of both the potential energy and the kinetic energy of an object. according to the law of conservation of energy, what happens to mechanical energy if the potential energy of an object decreases? a: mechanical energy decreases b: mechanical energy increases c: mechanical energy increases and then decreases d: mechanical energy remains unchanged.
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Physics, 02.08.2019 14:30, BreBreDoeCCx
Rita throws a ball straight up into the air and catches it at the same position from which she threw it. the ball has 18 j of mechanical energy when it leaves her hand. if no energy is lost due to friction, which statements about the energy of the ball are true? check all that apply. the potential energy at the top of the ball’s motion is 18 j. the kinetic energy is less when the ball is thrown than when it is caught. the kinetic energy increases as the potential energy decreases. the kinetic energy decreases as the potential energy increases. the total mechanical energy of the ball stays constant. the mechanical energy decreases as the ball moves up and increases as the ball comes down.
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What happens if heat flows into matter when no change of state is involved? a. both thermal energy and temperature increase b. both thermal energy and temperature decrease c. thermal energy decreases, temperature increases d. thermal energy increases, temperature decreases.
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Chemistry, 30.10.2019 18:31, jazzy4211
Need asap a. is an indicator of the amount of thermal energy that an object possesses. b. only pertains to heat transfer, not thermal energy. c. is exactly the same as thermal energy. d. is not related to thermal energy. 1. an ice cube that is dropped into a glass of water melts because a. the ice is denser than the water. b. the water is denser than the ice. c. the water is liquid, and the ice is solid. d. heat energy moves from the water to the ice. 2.what type of energy transformation occurs when a light bulb is turned on? a. mechanical energy is converted into kinetic energy. b. electrical energy is transformed into heat and mechanical energy. c. electrical energy is transformed into heat and light energy. d. potential energy is converted into kinetic energy.
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