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Which of the following was the first strong evidence for an…

Which of the following was the first strong evidence for an asteroid impact being the cause of the extinction of the dinosaurs 65 million years ago (as well as 75% of all species alive at the time)?

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If a spinning star gets larger in diameter, what happens to…

If a spinning star gets larger in diameter, what happens to its rotation rate?

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Thermal radiation is defined as

Thermal radiation is defined as

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In the formula E = mc2, what does E represent?

In the formula E = mc2, what does E represent?

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Gravity follows an inverse square law. This means that if th…

Gravity follows an inverse square law. This means that if the distance between two masses is decreased by a factor of 4, the gravitational force between those two masses

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How does the best possible angular resolution of a telescope…

How does the best possible angular resolution of a telescope with a 10-meter diameter mirror compare to that of a telescope with a 5-meter diameter mirror?

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According to the universal law of gravitation, the force due…

According to the universal law of gravitation, the force due to gravity is

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Photons behave like

Photons behave like

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How does the best possible angular resolution of a telescope…

How does the best possible angular resolution of a telescope with a 10-meter diameter mirror compare to that of a telescope with a 5-meter diameter mirror?

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An electron in an atom can go from a lower energy level to a…

An electron in an atom can go from a lower energy level to a higher energy level if the atom

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