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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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
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
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).