Suppose for an unexplained reason a star near Earth started shrinking. At what stage is the gravitational force between Earth and the star the greatest? Stage 1 Stage 2 Stage 3 Stage 4

What is the relationship between thermal energy and conduction convection and radiation

On a frictionless air track, cart A hits cart B moving at a velocity of 2 meters per second to the right. Which answer predicts what will happen?

If s car can drive 40m/s, then how long will it take to travel 2400m?

The space shuttle passes over mission control in Texas. After it flies a distance of 1,600,000 meters it is above Florida.

A child slides down a slide on the playground and her hair starts to stand on end. What happened?

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?

How Long will it take a plane flying north from Miami to reach New York City 1800 km away if the average velocity of the plane is 940 km/h

If vector A = 5.5N NE and vector B = 10m N 30° W, what is the vector product of A*B

Which is the best desciption of a molecule?