Physics, 18.12.2019 22:31 Gimagg5549
When humans started launching rockets into outer space, they needed to make certain the rockets had enough power to escape earth's gravitational field. which of these would have made it much more difficult for humans to design rockets capable of reaching outer space?
a.
if the earth was much less massive than it is
b.
if the moon spun on its axis more quickly
c.
if the earth was much more massive than it is
d.
if the moon was much more massive than it is
Answers: 1
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An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?
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Which branches of natural science include the study of an organism that lived 10 million years ago
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