A person who weighs 550 N empties her lungs as much as possible and is then completely immersed in water of density 1000 kg/m3 while suspended from a harness. Her apparent weight is now 21.2 N. What is her density?
A) 1050 kg/m3
B) 1040 kg/m3
C) 1030 kg/m3
D) 960 kg/m3
E) 56.1 kg/m3
B
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Water with a density of 1,000 
flows through a 2.00 cm diameter pipe with a velocity of 2.40 m/s. What is the volume flow rate?
A. 
B. 
C. 
D. 
E. 
Which of the following statements about the Moon is true?
A) The Moon goes through a cycle of phases because it always has the same side facing Earth. B) If you see a full Moon from North America, someone in South America would see a new Moon. C) The Moon's distance from Earth varies during its orbit. D) The Moon is visible only at night. E) The side of the Moon facing away from Earth is in perpetual darkness.
An RLC series circuit has a 200
resistance, a 3.0 mH inductor, and a 100 ?F capacitor. At resonance, what is the inductive reactance?
A. 21
B. 5.5
C. 11
D. 25
E. 30
The image formed by a concave mirror when the object distance is greater than the focal length is always
A. at a distance greater than the focal length. B. real. C. right side up. D. virtual.