The principal difference between a gas and a plasma has to do with
1) the kinds of elements involved,
2) interatomic spacing,
3) electrical conduction,
4) fluid pressure,
5) the proportion of antimatter,
while the principal difference between a liquid and a gas has to do with
6) the kinds of elements involved.
7) interatomic spacing.
8) electrical conduction.
9) fluid pressure.
10) the proportion of antimatter.
Answer: 3, 7
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Photon Energy: Two sources emit beams of microwaves. The microwaves from source A have a frequency of 10 GHz, and the ones from source B have a frequency of 20 GHz. This is all we know about the two beams. Which of the following statements about these beams are correct? (There could be more than one correct choice.)
A. Beam B carries twice as many photons per second as beam A. B. A photon in beam B has twice the energy of a photon in beam A. C. The intensity of beam B is twice as great as the intensity of beam A. D. A photon in beam B has the same energy as a photon in beam A. E. None of these statements are true.
When a rocket ship gaining speed in remote, gravity-free outer space runs out of fuel, it
A) gains speed for a short time, then slows down to a constant velocity. B) gains speed for a short time, slows down, and eventually stops. C) no longer gains speed. D) comes to a quick stop.
Carbon monoxide is necessary to lung function in healthy adults
What will be an ideal response?
Pythagoras believed that the underlying rules to understanding the Universe were mathematical
a. True b. False Indicate whether the statement is true or false