Can a simple machine's efficiency ever be greater than 100%?

Explain your answer.

A student measures the length of a quarter-mile lap around the school's track to be 402.3 meters, 402.3 meters, and 402.5 meters. If the accepted value for the path is 402.3 meters, the student measurements are ... 1. Precise only 2. Accurate only 3.

A very massive object A and a less massive object B move toward each other under the influence of gravity. Which force, if either, is greater

How much force does it take to accelerate a 2,000-kg car at 4 m/s A. 19,600 N B ... 002 N C. 8,000 N D. 500 N

Which of the following best describes kinetic energy? a. static energy b. thermal energy c. potential energy d. energy of motion

Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct? -Brody is correct because the wave involves an input of energy.

How does a bicycle rider's energy of motion changes as the gain speed while riding down a hill? Options: A) It is lost. B) It increases. C) It remains the same. D) It is stored in the bicycle rider.

When is a sailboat the stand on vessel in relations to a recreational power boat?

What happens when a balloon is rubbed with a woollen cloth?

A child causes a wagon to accelerate by pulling it with a horizontal force. newton's third law says that the wagon exerts an equal and opposite force on the child. how can the wagon accelerate? (hint: draw a free-body diagram for each object.)

Which wavelengths of light is the highest in energy?