Physics, 01.10.2019 18:30 chandranewlon
Acharge moves from point a to point b in an electric field. what is true in general about the energy of the charge?
a. the sum of the potential energy and the kinetic energy at a is the same as that at b.
b. the sum of the potential energy and the kinetic energy at a is greater than that at b.
c. the sum of the potential energy and the kinetic energy at a is less than that at b.
d. the sum of the potential energy and the kinetic energy at b fluctuates.
Answers: 2
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Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)
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Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?
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Physics, 22.06.2019 06:30
At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid
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Acharge moves from point a to point b in an electric field. what is true in general about the energy...
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