What causes a star to shine brightly

If a planet is orbiting along path c in the figure below, explain why it stays in orbit. refer to the figure in your explanation. use newton's law to justify your answer

A ball is at rest on the floor of a car moving at a constant velocity. What will happen to the ball if the car swerves suddenly to the left?

How long does core helium burning last in a star compared with core hydrogen burning?

A boy performs 100 J of work pushing a chair a distance of 4 m. How much force does the boy use? Assume there is no friction.

How to solve for vi in vf=vi+at?

Which statement about magnetic poles is accurate? A) Same magnetic poles attract, while different magnetic poles repel. B) Same magnetic poles attract, while different magnetic poles attract.

Power is measured in: A) J/s B) J2/s C) s/J D) s2/J

The amount or the strength of force is called its

An airplane in flight has a pressure difference between the lower and upper wing surface; this provides an upward force that balances the weight of the plane.

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