To which group of polymers does PVC belong?
a. Natural
b. Hydrolytic
c. Addition
d. Condensation
c
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Intensity of Sound: You double your distance from a sound source that is radiating equally in all directions. What happens to the intensity of the sound? It reduces to
A. one-half its original value. B. one-fourth its original value. C. one-sixteenth its original value. D. None of these
Power: A series circuit has a 100-? resistor, 2.00-mH inductor and a 4.00-?F capacitor connected across a 120-V rms ac source at 1000/? Hz. What is the power dissipated by the circuit?
A. 184 W B. 18.6 W C. 58.4 W D. 91.8 W E. 180 W
________ used the extensive records of planetary positions measured by ________ to discover that the orbits of the planets are ________.
A. Kepler; Galileo; elliptical B. Kepler; Tycho; elliptical C. Tycho; Kepler; elliptical D. Tycho; Kepler; circular
A student sees her physical science professor approaching on the sidewalk that runs by her dorm. She gets a water balloon and waits. When the professor is 2.0 s from being directly under her window 11 m above the sidewalk, she drops the balloon. You Finish the story.