The pressure in a constant-volume gas thermometer extrapolates to zero at what temperature?
a. 0°C
b. 0 K
c. 0°F
d. 0 Pa
b
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A 0.50-m long solenoid consists of 1 000 turns of copper wire wound with a 4.0 cm radius. When the current in the solenoid is 18 A, the magnetic field at a point 1.0 cm from the central axis of the solenoid is
a. 0.090 mT. b. 0.36 mT. c. 23 mT. d. 36 mT. e. 45 mT.
A satellite near Earth makes a full circle in about 90 minutes. Much farther from Earth, say at the distance to the Moon, time for a full circle would be
A) 90 minutes. B) less than 90 minutes. C) about 28 days. D) not enough information E) none of the above
A wave having a frequency of 1000 Hz vibrates at
A) less than 1000 cycles per second. B) 1000 cycles per second. C) more than 1000 cycles per second. D) none of the above
What is wrong with the following statements? A fixed quantity of ideal gas at constant volume is warmed from a temperature of 20°C to 40°C
The pressure in the gas doubles during this process because the temperature doubles. A) The appropriate temperature does not double during this process, so the pressure does not double either. B) It is impossible to keep a fixed quantity of gas at constant volume during the temperature change specified in the problem. C) The pressure changes to one half its initial value during this process. D) The conclusion regarding the pressure cannot be reached because the mass of the ideal gas particles is unknown. E) The pressure change will depend on whether the ideal gas particles are monatomic or polyatomic.