Complete the following statement: The sum of the magnitudes of the currents directed into a junction
a) equals the sum of the magnitudes of the currents directed out of the junction.
b) is less than the total current directed out of the junction.
c) equals the current that is directed along one of the lines out of the junction.
d) is divided equally among the number of lines directed out of the junction.
e) is greater than the total current directed out of the junction.
Ans: a) equals the sum of the magnitudes of the currents directed out of the junction.
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Imagine that you visit an alien world that has an atmospheric composition similar to that of Earth (that is, mostly nitrogen and oxygen) and a surface atmospheric pressure of 1.2 bars. Which of the following statements best describes the effects of this pressure?
a. It will feel quite similar to the atmospheric pressure on Earth. b. It will feel about like the pressure on a high mountaintop on Earth. c. It will feel crushing, like being deep under the ocean. d. It is so low that you'll need to wear a pressurized spacesuit to survive.
State the Conservation of Linear Momentum
What will be an ideal response?
Compare the four terrestrial world atmospheres
What will be an ideal response?
What evidence suggests that long gamma ray bursts originate from supernovae of stars massive enough to form black holes?
A) Some gamma ray bursts have been found to originate with galaxies that are actively forming stars, and would thus have a few very massive (but short lived) stars. B) Rapid observations in other wavelengths show that some gamma ray bursts coincide with points showing typical supernova light curves. C) The locations of gamma ray bursts suddenly begin blocking light from more distant stars. D) A and B E) B and C