If an ideal gas does positive work on its surroundings, we may assume, with regard to the gas, that its:
a. temperature increases.
c. pressure increases.
b. volume increases.
d. internal energy decreases.
B
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Indicate whether the statement is true or false
The dip angle is:
a. another term for magnetic declination. b. a measure of the tendency for a compass to point south. c. close to or at zero near the equator. d. close to or at zero just north of Hudson Bay.
Calculate the product of 2.1 × 10^2 and 1.9 × 10^7 . Express the answer in standard powers-of-10 notation
The speed of a 4.0-kg object is given by v = (2t) m/s, where t is in s. At what rate is the resultant force on this object doing work at t = 1 s?
a. 48 W b. 40 W c. 32 W d. 56 W e. 16 W