Quasars may result from the very energetic merging of ________ in condensing galaxies
Fill in the blank(s) with correct word
black holes
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Alec and Michelle release their snowballs from the same height, at the same time and with the same speed. Alec's is thrown upward while Michelle’s is thrown downward. Which one hits the ground with the greatest speed (ignore air resistance)?
A. the one thrown upward B. the one thrown downward C. they hit with the same speed D. it depends on the initial height
Why is guayule particularly useful? Explain
What will be an ideal response?
Explain under what conditions you would use percentage error and when you would use percentage difference. Why would you sometimes use both?
The Saros cycle
a. was used in ancient times to predict eclipses. b. is 18 years, 11 days long. c. accounts for the tides seen on Earth. d. was used in ancient times to predict eclipses and is 18 years and 11 days long, e. None of the other choices are correct.