A typical white dwarf is ________
A) as large in diameter as the Sun but only about as massive as Earth
B) as massive as the Sun but only about as large in size as Earth
C) as massive as the Sun but only about as large in size as Jupiter
D) about the same size and mass as the Sun but much hotter
B
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Which describes our understanding of flowing water on Mars?
a. It was never important. b. It was important once, but no longer. c. It is a major process on the Martian surface today.
How many decibels correspond to a sound intensity of 7.0 × 10-7 W/m2?
A) 70 B) 58 C) 69 D) 75 E) 63
An Earth satellite in an elliptical orbit travels slowest when it is
A) nearest the Earth. B) farthest from the Earth. C) neither of these
Compared with the sum of isolated-nucleon masses, their collective mass in a composite nucleus is
A) more. B) less. C) the same.