A carnot heat engine has an efficiency of 0.800. if it operates between a deep lake with a constant temperature of 280.0 k and a hot reservoir, what is the temperature of the hot reservoir?

What is the average speed and the average velocity of a car that is one complete don't know if the distance traveled was 120 m and it took five seconds to do the complete donut?

Which theory states that deviance results not only from what people do, but also from how others respond to those actions? A. strain theory B. labeling theory C. differential association theory D. control theory E. conflict theory

A 1200-kg cannon suddenly fires a cannonball at what is the recoil speed of the cannon? assume that frictional forces are negligible and the cannon is fired horizontally.

A reptiles body temperature gets too low, what does he need to do

The substance you have at the beganning of a chemical reaction are called the

If you combine 430.0 ml of water at 25.00 °c and 140.0 ml of water at 95.00 °c, what is the final temperature of the mixture? use 1.00 g/ml as the density of water. s

While working out, a man performed 200 j of work in 3 seconds. What was his power?

A funnel-shaped low pressure closure

A rubber rod can be charged negatively when it is rubbed with wool. predict what happens when you rub a copper rod with wool

A copper rod is 0.450 m long. Heat is added to the rod until it expands by 0.00130 m. How much did the temperature change? (Unit=C)