Einstein's theory of the photoelectric effect treats light as photons. According to this theory,
1.all photons have the same energy.
2.photons that move faster have more energy.
3.photons with double the frequency have double the energy.
4.photons with double the frequency have half the energy.
3
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The cratering of the lunar highlands shows us:
A) they are younger than the maria. B) they are older than the smoother maria. C) they have been unchanged for the last 4.6 billion years. D) they are like the Earth's continents, removed from the tectonic cycle of the mare. E) they were made of more rigid lavas than the basalts that made the maria.
Write the node equations for the nodes 1 and 2 of the model of the oak beam sketched in Figure 2-32.
In a ballistics test, a 28-g bullet pierces a sand bag that is thick
If the initial bullet velocity was and it emerged from the sandbag moving at what was the magnitude of the friction force (assuming it to be constant) that the bullet experienced while it traveled through the bag? A) 130 N B) 38 N C) 13 N D) 1.3 N
Semiconductor technology has been the basis for many new electronic devices
a. True b. False Indicate whether the statement is true or false