What is the speed of sound in air at freezing temperature?
A) 331 mph
B) 650 m/s
C) 331 m/s
D) 650 mph
E) 1100 m/s
C
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Brewster's Angle: What is Brewster's angle for light traveling in vacuum and reflecting off a piece of glass having a refractive index of 1.52?
A. 48.9° B. 33.3° C. 48.1° D. 56.7° E. 41.1°
Suppose that the Sun shrank in size but that its mass remained the same. What would happen to the orbit of the Earth?
A) Earth's orbit would be unaffected. B) The size of Earth's orbit would shrink, and it would take less than one year to orbit the Sun. C) Earth's orbit would expand, and it would take more than one year to orbit the Sun. D) Earth would change from a bound orbit to an unbound orbit and fly off into interstellar space.
For a Trombé wall fitted to a twenty story building, the Grashof number is for air flowing through the wall was found to be 25 x 10^12. What is the equivalent Reynolds number for the flow?
What will be an ideal response?
What is the wavelength in the Balmer series corresponding to a value of n = 15?
A) 277.1 nm B) 371.1 nm C) 188.6 nm D) 656 nm E) 754.2 nm