Carlota does 2000 J of work on a machine. The machine does 500 J of work. What is the efficiency of the machine?

A. 4%

B. 25%

C. 75%

D. 400%

Mass of object is 50g moves in a circular path of radius 10cm find work done

When nuclear reactor design and construction first begin optimism for the technology was very high. However licensing of new nuclear reactors in the United States effectively stopped about the 1970s mostly due to the public demand explain what

How is the slope derived from the conversion of potential to kinetic energy?

How to find the energy of an 8 pound weight with e=mc2

Copper has a specific heat of 387 J/kg°C. A copper bullet is moving at 950 m/s. If the bullet is suddenly stopped so that all of its kinetic energy is converted into heat, determine the temperature that the copper bullet reached before it was

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?

Which of the following is an example of potential rather than kinetic energy? a. water rushing over Niagara Falls b. a molecule of glucose c. a crawling beetle foraging for food d. light flashes emitted by a firefly

If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa], what is the area of the surface in units of square milimeters [mm2 ]?

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. She comes up with the perfect alloy and saves a sample of it. Which mass and volume measurements correspond to this sample? 7 g and 2.

What must be your car's average speed in order to travel 235km in 3.25 hours?