The event horizon marks the boundary within which the density is roughly the same as that of the atomic nucleus
a. True
b. False
Indicate whether the statement is true or false
False
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How does content of elements heavier than helium vary between young and old stars? Why?
What will be an ideal response?
Imagine that an alien spaceship crashed onto Earth. Which statement would most likely be true?
A) It would crash in the ocean. B) The aliens' home world is another planet in our own solar system. C) The crash would create a noticeable crater. D) All the evidence of the crash would be quickly whisked off by the U.S. military to Area 51 in Nevada.
Figure R5.10 shows a two-observer space time diagram for an Other Frame that moves at a speed of 0.5 relative to the Home Frame. What are the coordinates of event R in the Other Frame?
A. t? = –1.15 s, x? = 4.0 s
B. t? = 0.9 s, x = 3.4 s
C. t? = 6.5 s, x? = 1.7 s
D. t? = 2.2 s, x? = 3.2 s
E. Other (specify)
Two things that exploit fission are __________ and __________
Fill in the blank(s) with correct word