What is the proper abbreviation for ‘grams?'
a. g
b. gms
c. gm
d. gr
e. kg
a
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Four identical 1.5-mF capacitors are connected together electrically. What is the least possible capacitance of the combination?
a. 3.0E–4 F b. 2.5E–4 F c. 3.8E–4 F d. 1.5E–3 F e. 6.7E–4 F
The North Celestial Pole is 35 ? above your northern horizon. This tells you that:
a. you are at latitude 35 ? N. b. you are at longitude 35 ? E. c. you are at latitude 35 ? S.
Standing Sound Waves: An pipe of length L that is open at both ends is resonating at its fundamental frequency. Which statement about the sound is correct?
A. The wavelength is 2L and there is a displacement node at the pipe's midpoint. B. The wavelength is 2L and there is a displacement antinode at the pipe's midpoint. C. The wavelength is L and there is a displacement node at the pipe's midpoint. D. The wavelength is L and there is a displacement antinode at the pipe's midpoint.
When light enters a material of higher index of refraction, its speed
A) decreases. B) first increases then decreases. C) stays the same. D) increases. E) first decreases then increases.