Liquid crystal displays make use of interference of light
a. True
b. False
Indicate whether the statement is true or false
False
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The relationship 
for an elliptical orbit follows from the fact that the satellite’s velocity is perpendicular to its position vector at the two extreme points and also from
A. Conservation of angular momentum. B. Conservation of energy. C. Conservation of momentum. D. Newton’s second law. E. Some other properties of ellipses. F. (The given relationship is false!)
In the view of the science of the 17th, 18th, and 19th centuries, the natural world
A) cannot be investigated by scientific methods. B) is similar to a living organism. C) is similar to a clock. D) is not real. E) has a sort of free will of its own.
The farthest point of the Sun from the equator is known as the
a. declination. b. solstice. c. latitude. d. equinox.
How many degrees of hardness are defined
on the Mohs hardness scale? a) 3 b) 7 c) 10 d) 12