A train travels 250 km westward from Carthage to Johnson City. The train arrives 2.5 hours after it left. What was the average velocity of the train between the two stations?

A) 2.5 km/h west

B) 25 km/h west

C) 100 km/h west

D) 250km/h west

A 1423 kg car is traveling down the road at 105.0 km/h. while traveling at this rate of speed, what is the kinetic energy of this vehicle in kilojoules?

Heat engine uses thermal energy flowing from a heat source that is 225 K to a cold sink that is 50 K. What is the approximate efficiency of the heat engine?

5) Students use a balance to determine the mass of a marble is 7.5 grams. A graduated bottle contains 10.0 milliliters of water.

In an electric circuit it must be what or there will be no flow of electricity?

If two asteroids moved closer together, what would be the result on the gravitational force each asteroid exerts on the other? A. The gravitational force would increase. B. The gravitational force would decrease. C.

Which describes a property shared by ultraviolet light and X-rays? A They are both transverse waves. B They share the same wavelength. C They contain less energy than visible light. D They both require a medium to travel through.

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a