In a standing wave, not necessarily at the fundamental frequency, on a string of length L, the distance between nodes is
A. ?/4.
B. ?/2.
C. ?.
D. L/4.
E. L/2.
Answer: B
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What buoyant force is exerted by water on a 0.60-kg solid gold crown when it is immersed in water? The density of gold is 19.3 × 103 kg/m3 and that of water is 1000 kg/m3
A) 3.0 × 10-5 N B) 3.0 × 10-4 N C) 3.0 × 10-2 N D) 0.30 N
A ray of light travels from a glass-to-liquid interface at an angle of 23°. Indices of refraction for the glass and liquid are, respectively, 1.58 and 1.80 . What is the angle of refraction for the ray moving through the liquid?
a. 26.4° b. 20.1° c. 17.5° d. 20.2° e. 26.2°
What is meant by an ideal or perfect gas?
What will be an ideal response?
If the distance to the moon were halved, then the force of attraction between the earth and moon would be
A. quartered. B. halved. C. doubled. D. quadrupled.