If the work put into a lever is 25.0 joules and the work done by the lever is 20.0 joules, what is the efficiency of the lever?

11. An example of a compound is A. salt B. salt water C. sodium D. soft drinks

Calculate the kinetic energy of 1,400 kg roller coaster car that is moving with a speed of 12 m/s when it reaches the bottom of the hill.

How is kinetic energy of an object determined?

According to Newton's Law of Universal Gravitation, if you triple the distance between two masses, the force they experience ... A. becomes one-third of the original. B. will be nine times larger. C. becomes one-ninth of the original. D.

Which statements accurately describe Earth's magnetic field? Check all that apply.

Write two examples (mathematical expression) of physical laws that change inversely with the square of the distance.

What units must be used to express the temperature in the equation for the ideal gas law? explain?

Which region of the Sun is typically about 6,000 C?

How well does the infographic ""Plastics in the Ocean"" present a solution to the problem it describes?

Which of the following would be a good question that could be scientifically investigated? what is the best advice a parent can give a child what is the most appropriate number of dogs per household do cherry popsicles freeze slower than orange