Which of the following changes would make a heat engine less efficient?

A. A decrease in its exhaust temperature

B. A decrease in entropy

C. An increase in work done

D. A decrease in its operating temperature

Which of the following is a measure of velocity? Select one: a. 250 m/s b. 40 m/s2 c. 31 m/s north d. 55 m/s2 west

Which is the correct unit for electric power

A spacecraft is flying towards the Moon. what will happen to the moon's gravitational pull on the spacecraft. A. Increase. B. Remain the same. C. Decrease. D. repeal the spacecraft

Define the terms solute, solvent, and solubility. Describe two factors that influence solubility.

How does Newton's third law explain the forces involved when a car hits a concreate barricade

Explain why the car reaches a top speed even though the thrust Force remains constant at 3500N

4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the helicopter?

Unless otherwise posted, what is the speed limit in a school zone? florida

If you put in 10 J of work to push 1 c of charge against and electric field what will be its voltage with respect to its starting position? when released, what will be it's kinetic energy if it flies past it's starting position?

The process of changing the energy of a system by means of force. Force * Diatance