Which statement is true?
A. The speed of sound in air is inversely proportional to the tempera...
Physics, 21.02.2020 00:31 aesthetickait
Which statement is true?
A. The speed of sound in air is inversely proportional to the temperature of the
B. The speed of sound in air is directly proportional to the temperatu
C. The speed of sound in air is twice the temperature of the air.
D. The speed of sound in air is not affected by the temperature
The
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Answers: 1
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An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
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Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable:
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