A star that is twice as hot as another has twice the
A) Celsius temperature.
B) Fahrenheit temperature.
C) Kelvin temperature.
D) all of the above
E) none of the above
Answer: C
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A 2525 kg truck can be held up by a piston of radius 15 cm through a hydraulic lift by a force of 175 N on a piston of what radius?
A. 3.9 cm B. 1.04 cm C. 1.06 cm D. 1.26 cm
An electron-volt is
A) the charge of one electron. B) the energy of one electron. C) the energy jump between the first and second energy levels of hydrogen. D) an amount of energy much smaller than a joule. E) an amount of energy much larger than a joule.
How much mass should be attached to a vertical ideal spring having a spring constant of 39.5 N/m so that it will oscillate at 1.00 Hz?
A) 39.5 kg B) 2.00 kg C) 1.00 kg D) 1.56 kg E) 6.29 kg
The wavelength of ultrasound at 1 million Hz in air where the speed of sound is 340 m/s is __________
Fill in the blank(s) with correct word