Since Lice = 333 J/g, the change in entropy (in cal/K) when 1.00 kg of ice melts is
a. 144
b. 291
c. 312
d. 516
e. 80
B
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The excess charge on this sphere is closest to
A) 700 nC. B) 79 nC. C) 0.35 nC. D) 315 nC. E) 350 nC.
Mary builds a simple refracting telescope using two lenses of focal length 80 cm and 5.0 cm. The respective diameters are 60 mm and 10 mm
How many degrees wide does the moon appear through the telescope if it appears only 1/2 degree wide with the "naked eye"?
Two-Source Interference of Sound: A person stands between two speakers driven by the same source. Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m from one speaker and 4.95 m from the other. What type of interference does the person perceive?
A. constructive B. destructive C. both constructive and destructive D. neither constructive nor destructive
The average electric energy density of an electromagnetic wave is 0.600 × 10-7 J/m3. What is the electric field component of this wave?
A) 116 J/Cm B) 116 N/C C) 116 V/m D) All of the answers given are correct. E) None of the answers given is correct.