Resistors of values 7 ?, 15 ?, and 25 ? are connected in parallel across a fresh battery. Which resistor dissipates the greatest power?
a. the 7-? resistor
b. the 15-? resistor
c. the 25-? resistor
d. All dissipate the same power when in parallel.
a
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Due to the temperature and atmospheric conditions of Titan, scientists hypothesize that Titan may have rivers, lakes and possibly an ocean of ____
a. liquid water b. metallic hydrogen c. frozen carbon dioxide d. liquid methane e. liquid nitrogen
The search for extrasolar planets has uncovered a phenomenon astronomers call a "hot Jupiter." If our Solar System had one, where would it orbit, relative to the other planets?
What will be an ideal response?
A chain, 10.0 m in length and with a mass of 3.00 kg/m but negligible thickness, is wrapped around a spool with a radius of 25.0 cm
and a moment of inertia (not including the chain) of 0.360 kg?m2. With 1.00 m of chain hanging over the side, the spool is released so that it can turn freely about its axle. What is the angular speed of the spool at the moment that 5.00 m of chain are hanging over the side? A) 8.90 rad/s B) 17.8 rad/s C) 19.4 rad/s D) 22.1 rad/s E) 44.3 rad/s
The distance traveled by an automobile moving at a constant velocity is
a. directly proportional to the time. b. directly proportional to the time squared. c. inversely proportional to the time squared. d. inversely proportional to the time. e. none of these