An air conditioner is normally placed in a window so the hot air from the back blows outside. What would happen if the air conditioner were placed in the middle of a closed room and turned on?
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If they placed a detector at the slits in the experiment des…
If they placed a detector at the slits in the experiment described above to measure which slit each electron went through, what would happen?
In another important experiment used to determine the nature…
In another important experiment used to determine the nature of atoms, a gas like hydrogen, neon or mercury is excited by sparking it with electricity. The light emitted is separated out into individual colors using a prism or diffraction grating and a few lines of colored light are seen. How do atoms produce these lines of light?
When you compare the mass of the products to the mass of the…
When you compare the mass of the products to the mass of the reactants in a fission reaction, what do you find? (Note the question is asking about mass, not mass number.)
The next two questions deal with this situation: In one earl…
The next two questions deal with this situation: In one early experiment that helped determine the structure of matter, alpha particles were shot at a thin sheet of gold foil. The particles were detected on a screen that could be moved about the room.
Which of these is a correct comparison of metals and semi-co…
Which of these is a correct comparison of metals and semi-conductors?
Which of the cars has the largest kinetic energy at time 4?
Which of the cars has the largest kinetic energy at time 4?
According to Dr. Kowallis, how are the destructions describ…
According to Dr. Kowallis, how are the destructions described in 3 Nephi best explained?
How does the momentum of the dynamite before the explosion c…
How does the momentum of the dynamite before the explosion compare to the total momentum of all of the pieces immediately after the explosion?
How do the speed and acceleration of the hammer compare with…
How do the speed and acceleration of the hammer compare with those of the nail at any given time after they are dropped?