The main criterion for deciding between Universe geometries is ____
a. density
b. mass
c. temperature
d. age
e. inflation
a
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LR Circuits: A resistor and an inductor are connected in series to a battery. The battery is suddenly removed from the circuit and replaced by a wire to complete the circuit. The time constant for of the new circuit represents the time required for the current to decrease to
A. 25% of the original value. B. 37% of the original value. C. 63% of the original value. D. 75% of the original value. E. zero.
How far above the horizon is the Moon when its image reflected in calm water is completely polarized?
A) 36.9° B) 43.2° C) 46.8° D) 53.1° E) 57.5°
The rate at which energy is transferred is
A) power. B) electromagnetic induction. C) transformation. D) none of the above
The microwave background radiation:
a. represents the leftover glow from the Big Bang. b. had its slight non-uniformity measured by COBE. c. was discovered by Penzias and Wilson. d. All of the above.