Kirchhoff's Rules: For the circuit shown in the figure, write the Kirchhoff loop equation for the entire outside loop. Notice the directions of the currents!
What will be an ideal response?
V1 + I3R3 - V3 - I1R1 = 0
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Which of the following conditions must exist for a solar eclipse to occur?
A) Moon phase is new, and the Moon is passing through the Earth's orbital plane. B) The only condition is that the phase of the Moon must be full. C) Moon phase is full, and the Moon is passing through the Earth's orbital plane. D) The only condition is that the phase of the Moon must be new.
Negative charges feel a force ________ (indicate direction) values of higher electric potentials.
What will be an ideal response?
Suppose the main water pipe breaks in a nuclear power plant, shutting off the water flow. If the control rods fall immediately into place, stopping the chain reaction, is there still a problem?
A) Yes, because radioactivity continues to create lots of thermal energy. B) Yes, because the uranium can still fission even though it is not chain-reacting. C) Yes, because the control rods stop only the fissioning of uranium and not the fissioning of plutonium. D) No, because no heat can be created once the fission reaction is shut off. E) No, because the small amount of heat that continues being created is not enough to cause any danger.
Why do the spectra of stars differ, if they are all chiefly hydrogen and helium?
What will be an ideal response?