The coformation hypothesis for the origin of the Moon is difficult to reconcile with the dissimilar ________ and ________ of the Earth and Moon
Fill in the blank(s) with correct word
density; composition
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Saturn's F ring and the rings of Uranus are similar in that
a. they are made of dark material. b. they are made of icy material. c. they are found near large moons. d. they show well-defined spokes. e. they are very narrow.
Specific Heat: A person consumes a snack containing 14 food calories (14 kcal). What is the power this food produces if it is to be "burned off" due to exercise in 6 hours? (1 cal = 4.186 J)
A. 2.7 W B. 9763 W C. 0.6 W D. 0.0027 W
Which of the following is true of ancient astronomers?
A) They believed that each star could be part of only one constellation. B) They believed that the sky was a great sphere surrounding Earth. C) They believed that Earth revolved around the Sun. D) They believed that stars were scattered through space at different distances.
Two plane mirrors make an angle of 50° with one another. A ray of light parallel to mirror #1 reflects off mirror #2 and then strikes mirror #1 . What is the angle of incidence the ray makes with mirror #1?
a. 50° b. The answer is not given. c. 40° d. 55°