If we were to learn that the universe is a re-collapsing universe, then we must have misinterpreted Hubble's Law because the universe must be contracting, rather than expanding as generally believed
Indicate whether the statement is true or false
FALSE
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A polymer with a high % of crystallinity has a _____________hardness than does the same polymer that is less crystalline.
Fill in the blank(s) with the appropriate word(s).
In the Milankovitch theory, the elliptical shape of the Earth's orbit, its axis tilt, and axis precession vary with time. These combined at times to create ____ on Earth
a. day and night b. seasonal temperature variations c. daily temperature variations d. ice ages e. the constellations
The Sun is a(n) ______________
Fill in the blank(s) with correct word
In order for a circuit to respond quickly, its time constant should be short. In a circuit involving resistance and capacitance, which of the following choices would result in the shortest time constant?
a. R = 75 W, C = 75 mF c. R = 300 W, C = 75 mF b. R = 200 W, C = 200 mF d. R = 100 W, C = 30 mF