If a star is 10 light-years away from us and it explodes today, when will we know that it exploded?

today

10 years from today

10 parsecs from today

Provide a general expression to clearly describe how to use yourknowlegde of an atom's composition to determine the sign and magnitude of its chargge

If santa slides 5.00 m before reaching the edge, what is his speed as he leaves the roof?

Does a set of all sets contain itself?

A ball on a string makes 25.0 revolutions in 9.37 s, in a circle radius 0.450 m. What is it's velocity?

A pendulum bob is made of a ball filled with water. What would happen to the frequency of vibration of this pendulum if a hole in the ball allowed water to slowly leak out? (Treat the pendulum as a simple pendulum).

Could a nucleus that has one proton but no neutrons exist?

Which physical quantities has the unit kg·m·s-1?

Can an object travel at the speed of light? Why or why not?

Determine the amount of potential energy of a 5 Newton's book that is moved to three different shelves on a bookcase. The height of the shelves is 1.0 meter, 1.5 meter, and 2.0 meter

Which atom is involved in giving your heart energy to beat? carbon gold oxygen iron