The volume of a gas changes from 0.750 m3 to 0.320 m3 at a constant pressure of 1.5 × 10^5 Pa. How much work is done by the gas on its environment?

a. 4.8E+4 J
b. –6.5E+4 J
c. –4.8E+4 J
d. 6.5E+4 J


b

Physics & Space Science

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A thin sheet of plastic (n = 1.60) is inserted between two panes of glass to reduce infrared (l = 700 nm) losses. What thickness (in nm) is necessary to produce constructive interference in the reflected infrared radiation?

a. 218 b. 109 c. 55 d. 318 e. 443

Physics & Space Science

The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46). The ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, v2/v1, is

a. 1.99 b. 1.07 c. 0.932 d. 0.511 e. 0.760

Physics & Space Science

You observe a full Moon rising at sunset. What will you see at midnight?

A) a full moon high in the sky B) a first-quarter moon C) a waning gibbous moon D) a third-quarter moon

Physics & Space Science

When radioactive decays are counted, the resulting counts vary because of their statistical nature although the experimental situation may be the same. If 106 counts are registered, the next measurement of an equivalent situation may be expected to typically vary by about how many counts?

A. 1 B. 100 C. 1000 D. 10,000 E. 100,000

Physics & Space Science