Liquid metallic hydrogen is found in the interior(s) of
a. Uranus
b. Neptune
c. both of the above a and b.
d. neither of the above a and b
D
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A solar eclipse can only happen during a
A) new Moon. B) solstice. C) first quarter Moon. D) full Moon. E) perihelion passage of the Sun.
Hollows are peculiar pits found at the center of some craters on
A) Mars. B) our Moon. C) Mercury. D) Earth. E) Venus.
A chunk of ice (T = -20°C) is added to a thermally insulated container of cold water (T = 0°C). What happens in the container?
A) The ice melts until thermal equilibrium is established. B) The water cools down until thermal equilibrium is established. C) Some of the water freezes and the chunk of ice gets larger. D) None of the above things happen.
When light travelling in air passes into a sheet of glass, it is observed to change in wavelength to 58% of its wavelength in air. What is the speed of light in the glass?
A. 5.2 x 
m/s
B. 1.7 x
m/s
C. 3.0 x
m/s
D. 2.3 x
m/s