A pipe that is 0.92 m long and open at both ends vibrates in the second overtone with a frequency of What is the speed of sound in the air in this pipe?
A) 358 m/s B) 349 m/s C) 353 m/s D) 363 m/s E) 344 m/s
A
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The strongest lines present in spectral class A stars are absorption lines of
A) complex molecules. B) hydrogen. C) oxygen. D) iron. E) helium.
The most important, and least solvable, problem of coal power is generally agreed to be
A) its contribution to global warming. B) accidents. C) lack of sufficient coal resources. D) its contribution to acid rain. E) waste disposal.
A light beam is traveling inside a glass block that has an index of refraction of 1.46. As this light arrives at the surface of the block, it makes an angle of 53.0° with the normal
At what angle with the normal in the air will it leave the block? A) 33.2° B) It will not leave. C) 43.2° D) 59.1°
An ideal gas constant volume gas thermometer has pressure 2.00 atm at the triple point of water. What is the temperature when the pressure in the thermometer is 6.00 atm?
A) 137 K B) 584 K C) 819 K D) 683 K E) 410 K