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Physics, 22.06.2019 19:30
Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match
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Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?
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Physics, 23.06.2019 04:00
A200 g lead frying pan gains 2000 joules of heat. what is the change in temperature
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Physics, 23.06.2019 05:40
While preforming an experiment involving a reaction between two chemicals the scientist observes that the reaction container has become warm the observation is an example of
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