Estimation: Estimate the thickness, in meters, of an ordinary sheet of paper.
A. 10-4 m
B. 10-5 m
C. 10-6 m
D. 10-7 m
E. 10-8 m
Answer: A
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Due to its elliptical orbit, Mars is farther from the Sun on average during winter in the Southern Hemisphere. This means Southern Winter on Mars will be
A) long and mild B) short and hot C) long and cold D) short and mild
A series LR circuit dissipates 60 W. The circuit is powered by a 120 V rms 60 Hz supply. If the current is 2.0 A rms, what is the circuit resistance?
A. 50
B. 60
C. 15
D. 10
E. 24
Florence, who weighs 120. lbs, stands on a bathroom scale in an elevator. What will the scale read when the elevator is accelerating downward at 2.0 m/s2?
A) 86. lb B) 1.4 × 102 lb C) 1.2 × 102 lb D) 96. lb E) 1.56 × 102 lb
Groundwater is water
A) beneath the ground surface. B) above the water table. C) that soaks into the ground. D) below the water table.