Physics, 02.08.2019 01:30, batmanmarie2004
When pushing a child on a swing, you must give them a push periodically to keep them moving. this seems to go against the law of inertia and the conservation of energy. when pushing a child on a swing, you must give them a push periodically to keep them moving. this seems to go against the law of inertia and the conservation of energy. why does the child need a push periodically to keep moving. a) energy is lost over time slowing down the swing. b) all objects will naturally come to rest over time. c) a wind must have been blowing in the opposite direction. d) friction provides an outside force slowing the swing down.
Answers: 2
Physics, 22.06.2019 10:00, amyaacrawford86
Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix. b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds. c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.
Answers: 1
Physics, 22.06.2019 16:00, LikeIke2859
In which of the following is positive work done by a person on a suitcase
Answers: 1
When pushing a child on a swing, you must give them a push periodically to keep them moving. this se...
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