In the upper atmosphere at altitudes where commercial airlines travel, we find extremely cold temperatures. What is the speed of sound (in metric units) for a temperature of -53.0 oC?


298.1 m/s

Physics & Space Science

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A sample of an ideal gas has a volume of 0.0100 a pressure of Pa, and a temperature of 300 K. What is the number of moles in the sample of gas?

A. 0.302 B. 0.330 C. 0.375 D. 0.401 E. 0.502

Physics & Space Science

Sounds from musical instruments are produced by

A) vibrating strings. B) vibrating air columns. C) percussion. D) all of the above E) none of the above

Physics & Space Science

Why might the presence of a giant planet be both good and bad news for life on a terrestrial planet in another solar system?

What will be an ideal response?

Physics & Space Science

What is the kinetic energy of a 200-kg satellite as it follows a circular orbit of radius 8.0 × 106 m around the Earth? (Mass of Earth = 6.0 × 1024 kg.)

A. 5.0 × 109 J B. 1.0 × 1010 J C. 1.5 × 1010 J D. 2.0 × 1010 J E. 2.5 × 109 J

Physics & Space Science