If a source of sound is traveling toward you, the speed of the sound waves reaching you is _______________ the speed the sound waves would have had if the source were stationary

a. faster than
b. slower than
c. the same as


c
RATIONALE: The frequency is higher, but the speed is the same.

Physics & Space Science

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The center of mass of a binary star system is

A) the center of the most massive of the two stars. B) the center of the least massive of the two stars. C) the point halfway in between them. D) the point at which the two objects would balance if they were somehow connected. E) the average mass of the two stars.

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What is the maximum altitude of the Sun for an observer located at the north pole (90°N)? On what date will the Sun be observed at the maximum altitude?

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Electrons are used to produce X-rays by allowing a beam of electrons to strike a heavy metal surface. When the intensity of the electron beam is increased, this results in:

A. X-rays being produced having longer wavelength B. X-rays being produced having higher energy C. More X-rays produced per unit time D. Faster X-rays being produced

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Sound traveling in air at 23 enters a cold front where the air temperature is 2If the frequency of the sound is 1500 Hz, what is the difference in the wavelength between the cold air and the warm air?

A. 0.009 m B. 0.019 m C. 0.067 m D. 0.058 m

Physics & Space Science