1. how does the acceleration compare for an object in free fall when an it is thrown up versus thrown down? a. the acceleration is faster when it is thrown up compared to thrown down. b. the acceleration is positive when it is thrown up and negative when it is thrown down. c. the acceleration is slower when it is thrown up compared to thrown down. d. the acceleration is the same regardless of being thrown up or thrown down.
2. a textbook is dropped from the second story stairs and free falls to the ground. what changes, if any, would be observed of the velocity and the acceleration of the textbook as it falls? a. the velocity decreases b. the velocity increases c. the acceleration remains constantd. both b & c
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A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m
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If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)
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Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.
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Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.
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1. how does the acceleration compare for an object in free fall when an it is thrown up versus throw...
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