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Which of these is a correct comparison of metals and semi-conductors?

Which of the cars has the largest kinetic energy at time 4?

 According to Dr. Kowallis, how are the destructions described in 3 Nephi best explained?

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 those of the nail at any given time after they are dropped?

See figure 1 in the problem above. If the single slit that produced the image at the top is made narrower, what will happen to the area of red light on the screen seen in the top image?

As the block from the problem above is pushed deeper into the water, what happens to the pressure on the bottom surface of the block?

When the dynamite explodes, what happens to its mass?

All of the protostars in this molecular cloud are about the same distance away. If we were to compare the red and blue main sequence stars that form from these protostars 100,000 years from now, after these protostars have all become main-sequence stars, what would we find?

If you were to gradually increase the frequency of the light wave that produced the images shown above, what would change in the picture shown above?