A uranium atom is 238 times as massive as a hydrogen atom. Compared with the diameter of a hydrogen atom, uranium's size is
A) slightly smaller.
B) only slightly larger.
C) is much larger, but less than 238 times as large.
Answer: B
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Which of the following correctly lists the terrestrial worlds in order from the thickest atmosphere to the thinnest atmosphere? (Note: Mercury and the Moon are considered together in this question.)
A) Venus, Mars, Moon/Mercury, Earth B) Mars, Venus, Earth, Moon/Mercury C) Earth, Venus, Mars, Moon/Mercury D) Venus, Earth, Mars, Moon/Mercury
RLC Circuits: A series circuit has a 100-? resistor, a 0.100-?F capacitor, and a 2.00-mH inductor connected across a 120 V rms ac source operating at resonant frequency. What is the rms value of the voltage across the inductor?
A. 170 V B. 150 V C. 120 V D. 54.0 V E. 533 V
A sealed container holds 0.020 moles of nitrogen (N2 ) gas, at a pressure of 1.5 atmospheres and a temperature of 290 K. The atomic mass of nitrogen is 14.0 g/mol
The Boltzmann constant is 1.38 × 10-23 J/K and the ideal gas constant is R = 8.314 J/mol • K = 0.0821 L • atm/mol • K. The mass density of the gas is closest to A) 0.90 kg/m3. B) 1.3 kg/m3. C) 1.8 kg/m3. D) 2.2 kg/m3. E) 2.6 kg/m3.
A device that doesn't obey Ohm's law is a
A) copper wire. B) silver bar. C) light bulb. D) resistor. E) tungsten wire.