The next two questions deal with this situation: Suppose you are playing baseball and hit the ball with the bat.

If an atom’s 2p orbitals are full, how many electrons does it have in those 2p orbitals? Be careful. The question asks how many 2p electrons the atom has, not how many TOTAL electrons the atom has.

As you stand on the escalator going from one floor to a higher one at constant speed, which of these statements best describes what is happening?

In the bottom, double-slit pattern shown above there are lots of small dark lines separating the band of red light into individual spots. The spots are not present in the top image. What causes these?

This picture below was taken in Death Valley, a dry basin in California.    US park service, public domain Which of these caused the features in the image?

We have placed many satellites in orbit around the Earth. How are we able to keep them up in the sky?

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?

Which one of these forces is a result of an electromagnetic interaction?

Below is a picture of a nearby star-forming molecular cloud in our galaxy. Two southern hemisphere telescopes were used to take the pictures of protostars in this molecular cloud shown below. The next five questions test your understanding of the life of a star. Attributions Images ALMA (ESO/NAOJ/NRAO), J. Tobin; NRAO/AUI/NSF, S. Dagnello; Herschel/ESA. Protostarts in Orion Molecular Clouds . (CC BY 3.0). Via NRAO.

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