A(n) ______________ is an elementary particle with no charge
a. electron
b. neutron
c. proton
d. atom
b
Physics & Space Science
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Estimate Comet Tempel 1's diameter, using the scale bar in the photo.
What will be an ideal response?
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A heat engine operating at maximum efficiency has an efficiency of 25%. The temperature of the cold reservoir is 300 K. What is the temperature of the hot reservoir?
A) 350 K B) 375 K C) 400 K D) 450 K E) 500 K
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What sound level change corresponds to a factor of two change in intensity?
a. 0.2 dB b. 2.0 dB c. 3.0 dB d. 11 dB e. 20 dB
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A 2000 N car travels 50 m along a level road, powered by a drive force of 1000 N. The work done by the drive force is
A) 50,000 J. B) 10,000 J. C) zero. D) 1000 J. E) 2000 J.
Physics & Space Science