A roller coaster train with a mass of 500 kg stops at the top of a hill. If the hill is 110 m high, what is the potential energy of the train? 4,900 J 5,612 J 55,000 J 539,000 J

A toy roller coaster cart has a mass of 2kg. The track of the roller coaster has a semicircular valley with a radius of 1.2 meters.

What does critical mass depend on

What is the formal mechanism that forces human conduct to adhere to standardized rules and norms? custom tradition law mores socialization

A tuna fish body is streamlined to reduce friction. Which describes the type of friction the fish must overcome?

The idea that electrons have both wave and particle behaviors was first introduced by A. Niels Bohr B. Ernest Rutherford C. Louis de Broglie

A pendulum swings with amplitude. 02 m and period of 2 s what is its maximum speed

What bone cells respond to stress?

What are two ways that convention currents in the ocean distribute the suns energy?

A 535 kg roller coaster car began at rest at the top of a 93.0 m hill. Now it is at the top of the first loop-de-loop. This roller coaster's track is nearly frictionless, so resistance can be ignored. Using g = 9.

A bulldozer does 45,000 joules of work to push a boulder a distance of 30 meters. How much force is applied to push the?