Identical masses m are attached to identical springs of spring constant k suspended from the ceiling. With both masses hanging in their equilibrium positions, mass A is pulled down 10 cm and released while mass B is pushed up 10 cm and released. Which statement is correct?
a. Mass A will travel a smaller distance to its highest point than mass B will travel to its lowest point.
b. Mass A will travel a greater distance to its highest point than mass B will travel to its lowest point.
c. Masses A and B will travel equal distances between their highest and lowest points.
d. More work was done on mass A by the extending force than on mass B by the compressing force.
e. The total work done on mass A by the extending force was equal to the total work done on mass B by the compressing force.
c
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A 3.5-?F capacitor is attached to a 20-V power supply. How much energy is stored in the capacitor?
a. 7.0E–4 J b. 7.0E–3 J c. 2.5E–4 J d. 2.4E–3 J e. 2.0E–3 J
Heat Engines: A nuclear power plant has an actual efficiency of 33%. If 0.19 MW of energy are released from fission, how much electric power does the power plant produce?
A. 0.063 MW B. 6.3 MW C. 25 MW D. 0.25 MW
The south pole of a bar magnet is moved toward an aluminum ring, along the axis of the ring. As the magnet approaches, the changing magnetic flux induces an electric current in the ring that, when seen from the bar magnet, corresponds to positive charge carriers flowing
A. alternating with a fixed frequency. B. alternating with a frequency proportional to a speed of the bar magnet. C. clockwise. D. counterclockwise.
Outgassing produces gas rich in carbon dioxide, nitrogen, and water vapor
Indicate whether the statement is true or false