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)?

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

Thermal radiation is defined as

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

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

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?

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

Photons behave like

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?

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