When work is done by a system and heat is subtracted, the temperature of the system
A) increases.
B) decreases.
C) remains unchanged.
Answer: B
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The driver of a motorboat that can move at 10 m/s wishes to travel directly across a narrow strait in which the current flows at 5 m/s
(a) At what angle upstream should the driver head the boat? (b) How long will it take to cross a distance of 1.6 km?
At the upper right of the Hertzprung—Russell diagram we find
A) red giant stars B) supergiant stars C) white dwarfs D) main sequence stars
Light is incident on a double-slit. The fourth bright band has an angular distance of 7.0° from the central maximum. What is the distance between the slits (in ?m)? (Assume the frequency of the light is 5.4 × 10^14 Hz.)
a. 27 b. 21 c. 24 d. 18 e. 14
At a location that is 3.00 m from wave source A and 4.20 m from wave source B, destructive interference occurs. Source A and source B are coherent and in phase
What is the maximum wavelength of the waves? A) 0.60 m B) 1.20 m C) 12.6 m D) 1.40 m E) 2.40 m