Astro set 4
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The planets never travel in a straight line as they orbit the Sun. According to Newton's second law of motion, this must mean that _______
a force is acting on the planets
Which of the following scenarios involves energy that we would typically calculate with Einstein's formula E = mc2?
A small amount of the hydrogen in a nuclear bomb becomes energy as fusion converts the hydrogen to helium.
Newton showed that Kepler's laws are ________.
natural consequences of the law of universal gravitation
When space probe Voyager 2 passed by Saturn, its speed increased (but not due to firing its engines). What must have happened?
Saturn must have lost a very tiny bit of its orbital energy.
The energy attributed to an object by virtue of its motion is known as ________.
What is the difference between a bound orbit and an unbound orbit around the Sun?
An object on a bound orbit follows the same path around the Sun over and over, while an object on an unbound orbit approaches the Sun just once and then never returns.
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