Our own Local Group is dwarfed by the much larger Virgo Cluster, about 50 million light years distant
Indicate whether the statement is true or false
TRUE
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The metric prefix for one one-hundredth is
A) milli. B) centi. C) kilo. D) mega. E) giga.
The first extrasolar planets discovered are small and have long orbital periods
a. True b. False Indicate whether the statement is true or false
The 1560 kg solid steel door to a bank vault is 2.00 m high, 1.00-m wide and 10-cm thick. One hinge is 60.0 cm down from the top on the left-hand side of the door. The other hinge is 30.0 cm up from the bottom. What horizontal force, in what direction, does the door exert on the upper hinge?
a. 6950 N, left b. 6950 N, right c. 7640 N, left d. 7640 N, right e. 15,300 N, left
If the current flowing through a circuit of constant resistance is doubled, the power dissipated by that circuit will
A) quadruple in magnitude. B) double in magnitude. C) decrease to one-half of what it was. D) decrease to one-fourth of what it was.