Physics, 13.01.2021 01:00 itasykamila
If heat Q is required to increase the temperature of a metal object from 4°C to 6°C, the
amount of heat necessary to increase its temperature from 6°C to 12°C is
O A. Q
O B. 29
O C. 3Q
O D. 4Q
Answers: 2
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Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.
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One soccer player (a) is moving at 4 km/h when she kicks the ball while another soccer player (b) is moving at 8 km/h. what statement accurately compares their kinetic energy if they have the same mass? a) both soccer players have the same kinetic energy. b) player b has twice the kinetic energy of player a. c) player b has four times the kinetic energy of player a. d) their kinetic energy can't be compared without knowing their mass.
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Which is not true of alpha radiation? o a. it increases the number of protons. o b. it has a positive charge. o c. it causes transmutation. o d. it is heaviest of the three types
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If heat Q is required to increase the temperature of a metal object from 4°C to 6°C, the
amount of...
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