The Mesozoic is a(n)
a. epoch.
b. era.
c. eon.
d. period.
b
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If an optical system consists only of an object and a single convex mirror,
a. the image will sometimes be inverted. b. the magnification will sometimes have an absolute value greater than 1. c. the image distance will never be negative. d. the image will always be virtual.
In a two-slit interference pattern projected on a screen, the fringes are equally spaced on the screen
1.everywhere. 2.only for large angles. 3.only for small angles.
Siddhartha saved up money from his summer job to buy a powerful home theater system. When shopping for the best buy in a home theater system the sales representative informs Siddhartha that the more expensive models are worth the money because they ____.
A) amplify sound up to 160 dB B) boost frequencies below 80 Hz C) buffer sounds that reach 60 dB D) filter out frequencies below 10000 Hz
A model for combining the electromagnetic, weak and strong nuclear interactions into a single basic force is a(n)
a. electroweak theory b. GUT c. quark theory d. generalized theory of relativity e. theory of strangeness