The resistance of a conducting material depends on its
a. composition
b. length
c. diameter
d. temperature
e. all of the above
E
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Molecular Speeds: At what temperature is the rms speed of hydrogen molecules, H2, which have a molecular weight of 2.02 g/mole, equal to 2.0 km/s? The Boltzmann constant is 1.38 × 10-23 J/K and NA = 6.022 × 1023 molecules/mol.
A. 17°C B. 34°C C. 51°C D. 68°C E. 72°C
1.50 moles of an ideal gas freely expands from 1.00 liter to 4.50 liters. The change in entropy in the expansion is
A. 5.80 J/K B. 8.50 J/K C. 16.3 J/K D. 18.7 J/K
A molecule is:
a. a combination of two or more atoms b. less stable than its constituent atoms separated c. electrically charged d. a carrier of one or more extra neutrons e. another term for an atom
Suppose Sammy Sosa hits a home run which travels 361. ft (110. m). Leaving the bat at 50 degrees above the horizontal, how high did it travel?
What will be an ideal response?