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

Physics & Space Science

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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?

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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

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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

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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

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