Metric System: The quantity 0.00325 × 10-8 cm is equivalent to
A. 3.25 × 10-12 mm.
B. 3.25 × 10-11 mm.
C. 3.25 × 10-10 mm.
D. 3.25 × 10-9 mm.
E. 3.25 × 10-8 mm.
Answer: C
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As sediments accumulate, compaction and cementation produce sedimentary rock. This process is called
A) consolidation. B) solidification. C) lithification. D) solifluction.
Which statement about young stars is FALSE?
A) They contain a larger fraction of heavy elements than previous generations. B) They are born in a dustier environment than earlier generations. C) They are more likely to have planets forming with them than earlier generations. D) The high mass stars will be more likely to produce heavier elements as they evolve. E) Being young, they will have more pure hydrogen than earlier generations.
Two parallel wires carry currents in the same direction and exert a force on each of magnitude F for each meter of length. One of the currents is now reversed in direction and doubled in magnitude. What are the resulting magnitude for the force per meter of length and its direction relative to the wires?
1.2F, attractive 2.2F, repulsive 3.4F, attractive 4.4F, repulsive
Buoyancy: An object floats with half its volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is the weight of the object? The density of water is 1000 kg/m3.
A. 1000 N B. 2000 N C. 4000 N D. It cannot be determined because we do not know the volume of the object.