Which was the source of lava during the flooding stage of the Moon's development?
a. moonquakes and tectonic shifts
b. lower crust and upper mantle
c. the deep core
d. volcanoes
e. impacts
b
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A 10-kg object is hanging by a very light wire in an elevator that is traveling upward. The force that the wire exerts on the object is measured to be 75 N. What are the magnitude and direction of the acceleration of the elevator?
What will be an ideal response?
Electron Speed: Given that the speed of an electron in the ground state of hydrogen is 2190 km/s, what is the speed of an electron in the n = 4 orbit of hydrogen?
A. 547 km/s B. 31,000 km/s C. 139 km/s D. 178 km/s E. 2180 km/s
A philosopher informs you that you do not have any free will, because Newtonian physics predicts that the physical universe and everything in it behaves in a deterministic fashion, just like the workings of a clock
A good argument against this position is that A) Newtonian physics is now known to be incorrect in certain situations. B) it is impossible to scientifically prove such a general statement. C) Both of the above. D) None of the above. E) all philosophers are knaves and fools.
Imagine a group of people standing in a circle. There are two ways that they can create a “wave”. One way is by placing the palms of their hands together. One person begins by pushing on the adjacent person's palm who, in turn, pushes on the next person's palm, etc. Another way is by adjacent people holding hands. One person lifts the other person's hand and then that person lifts the next
person's hand, etc. Which types of waves are represented by each case? 1.Both cases represent longitudinal waves. 2.The first case represents a transverse wave and the second case represents a longitudinal wave. 3.Both cases represent transverse waves. 4.The first case represents a longitudinal wave and the second case represents a transverse wave.