A heat engine exhausts 8900 j of heat while performing 2800 j of useful work. part a what is the efficiency of this engine?

The number three ball moves off with a velocity of 5 m/s. What is the final velocity and direction of the eight ball?

Which of the following can supply the energy for modern home heating systems? electricity biomass solar geothermal

Milk is an example of a A.) solution B.) homogeneous mixture C.) colloid D.) compound

Un campista tiene 10 dias sin bañarse y al decidir hacerlo introduce en una tina de aluminio de 1500g, 50kg de agua y alcanza una temperatura de 8°c.

Which one of the following crystal structures has the fewest slip directions and therefore the metals with this structure are generally more difficult to deform at room temperature? a. BCC b. FCC c. HCP d. BCT

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)