In the first law of thermodynamics, ?U = Q + W, W is positive when
a. the work is being done on the environment by the system.
b. the work is being done on the system by the environment.
c. the work is being done on the environment by the system, and the temperature of the system goes up.
d. the work is being done on the system by the environment, and the temperature of the system goes up.
b
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Pluto's density is most similar to
A) the terrestrial planets. B) the jovian planets. C) moons of the jovian planets. D) Mercury, but nor Venus, Earth, or Mars. E) Saturn, but not Jupiter, Uranus, or Neptune.
A Roman numeral equal to the ion charge is placed in parentheses immediately after the metal name for ____________
Fill in the blank(s) with the appropriate word(s)
Pluto's classification as a planet has been called into question
Indicate whether the statement is true or false
If R = 3.0 k?, C = 5.0 mF, ? = 6.0 V, Q = 15 mC, and I = 4.0 mA, what is the potential difference Vb ? Va?
a.
?3.0 V
b.
+9.0 V
c.
?15 V
d.
+21 V
e.
?6.0 V