A circular track has a radius of 32.7 m. What is the centripetal acceleration of a runner moving at the rate of 6.2 m/s?

A light wave is traveling through the air and then enter water. How will the light change? It will change color. It will become brighter. It will move at a different speed. It will stop completely.

Saturn has a radius of 60,330,000 meters and a mass of 5.7 * 10^26 kilograms. Calculate the strength of its gravitational field.

Which phrases accurately describe an elliptical galaxy?

The length of the assembly decreases by 0.006 in. when an axial a - force is applied by means of rigid end plates. Determine (a) the magnitude of applied force, (b) the corresponding stress in the steel core.

What device can be used to remove toxic pollutants from power plant emissions? a. catalytic converters c. bioreactors b. scrubbers d. mufflers

Science fiction movies that include explosion sound effects for battles in space are not scientifically correct. Why is this? A. The sound from an explosion can only be transmitted by air. B.

What is the kinetic energy of a 1,900 kg car moving at 89 km/h?

Why do we study black holes

Calculate the kinetic energy of a charging elephant if its mass is 5,000kg and it moves at 8m/s

Why is a decrease in Earth's ozone harmful to life?