If you push a 4-kg mass with the same force that you push a 10-kg mass from rest, then
A) both masses accelerate at the same rate.
B) the 10-kg mass accelerates 2.5 times faster than the 4-kg mass.
C) the 4-kg mass accelerates 2.5 times faster than the 10-kg mass.
D) the 10-kg mass accelerates 4 times faster than the 4-kg mass.
E) the 4-kg mass accelerates 4 times faster than the 10-kg mass.
C
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Use the appropriate relativity formula given in the text to answer the following: Isabella is moving by you at a speed of 0.8c. While 1 minute passes on your watch, how much time will you see pass on her watch?
A) 36 seconds B) 1 minute C) 48 seconds D) 100 seconds
A girl throws a stone straight down from a bridge. The stone leaves her hand with speed of 8.00 m/s at a height of 12 m above the water below. How much time does it take for the stone to hit the water?
A) 2.58 s B) 0.95 s C) 1.8 s D) 0.41 s E) 17.3 s
Snell's Law: A light beam having a wavelength of 470 nm in air is directed into glycerine at an angle of 75.0° with the normal in air. Glycerine has a refractive index of 1.47. (c = 3.0 × 108 m/s)(a) What are the frequency and wavelength of the light in the glycerine?(b) What angle does the light beam make with the normal in the glycerine?
What will be an ideal response?
Why was it thought that Titan may have oceans of methane?
A) Titan's atmosphere contains traces of methane. Similarly, Earth's atmosphere contains traces of water vapor. So, scientist thought Titan should have methane oceans. B) The atmospheric pressure at Titan's surface and its surface temperature are such that methane should be liquid on Titan's surface. C) The abundance of hydrocarbons in the atmosphere of Titan, led scientists to believe that Titan had an abundance of methane on its surface. D) Titan's atmosphere is like Earth's (mostly nitrogen), but its temperature is too low for water to be in the liquid phase. The only other possible liquid was methane. E) Since Saturn has methane ice in its atmosphere, methane should be abundant in this region of the solar system. The sheer abundance of methane in the region led scientists to hypothesize methane oceans on Titan.