Where does a rider on a roller coaster get energy?

What is one advantage of nuclear energy?

Which is the best example of the law of conservation of energy? A) A basketball stops bouncing because its energy disappears. B) A rolling skateboard slows down because some of its kinetic energy changes to heat.

Which statement best describes the relationship between an object's density and its index of refraction? A. As the mass per unit volume of the substance increases, the refraction index decreases. B.

You hear a clap of thunder 3 seconds later the sound travels at a speed of 330 m/s how far away was the lightning

If 320 J of work is done on a spring with a spring constant of 730 N/m, how far will it stretch? a 0.58 m b0.87 m c0.94m d0.61

Why do stars have names

Which of these reactions is responsible for energy radiating from stars, including the sun?

Why do liquids flow? A liquid particles are wet? b liquid particles are smooth? c Liquid particles are not fixed in place? d liquid particles are attracted to each other? I think the answer is D

Identify at least two ways that runoff can negatively impact an ecosystem.

How do we know that the universe is getting bigger faster and faster?