Air at a temperature of 32°F has a relative humidity of 60%. If the temperature of the same air increases, the relative humidity increases
a. True
b. False
Indicate whether the statement is true or false
False
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Total Internal Reflection: Light travels from crown glass, with a refractive index of 1.52, into water, having a refractive index of 1.33? The critical angle for this interface is closest to which one of the following angles?
A. 42° B. 48° C. 53° D. 57° E. 61°
What property of dark matter leads to it keeping galaxy clusters together?
a) It produces gravity due to its mass. b) It contains a cosmological constant. c) It produces the electromagnetic force due to its charge. d) It carries the strong force. e) It has high adhesion so galaxies stick to it.
The masses of the Moon and Earth are 7.4 ´ 1022 kg and 6 ´ 1024 kg, respectively. Earth-Moon distance is 3.8 ´ 108 m. What is the size of the gravitational force between Earth and the Moon? The gravitational constant is G = 6.67 ´ 10-11 N-m2/kg2.
A. 2.05 ´ 1020 N B. 7.79 ´ 1028 N C. 3.07 ´ 1030 N D. 1.17 ´ 1039 N
An object thrown downward does not experience free fall
Indicate whether the statement is true or false