An engine takes in 200 J of heat, expels 40 J of heat, and does 160 J of work. What is the efficiency of the engine?

A. 40%

B. 60%

C. 80%

D. 20%

Which of the following is an example of a concave mirror? surveillance mirror car side mirror reflecting telescope microscopes

When did robert fulton invent the steamboat

State the principle of work-kinetic energy theorem.

A commercial office building is to be supplied service at 208Y/120 V from the utility company 12.47 kV distribution feeder (12.47 kV line-to-line and 7.2 kV lineto-neutral). The estimated demand load is 85 kW at 0.9 lagging power factor.

We always see the same side of the Moon because Choose one:A. the Moon does not rotate on its axis. B. the Moon rotates once each revolution. C. when the other side of the Moon is facing toward us, it is unlit. D.

What is the relationship between the mass and period in a mass hanging on spring oscillation and why?

Saturn's moon Titan has a mass of 1.35 * 1023 kg. If Titan is 1.19 * 106 km from Saturn, and Saturn's mass is 5.86 * 1026 kg, what is the gravitational force between Saturn and its moon? 2.76 * 104 N 3.29 * 107 N 3.73 * 1021 N 4.43 * 1030 N

What has occured when bubbles form in a liquid that is being heated

What would happen to the supply of ATP in your cells if you did not eat enough carbohydrates?

According to a rule-of-thumb, every 5 seconds, between a lightning flash and the following thunder gives the distance to the flash in miles.