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?

A sailboat moves north for a distance of 10.00 km when blown by a wind 30° east of south with a force of 5.00 * 104 N. How much work was done by the wind?

What is the acceleration of a 2 kg basketball rolling down a cart with a force of 16 n

The gauge pressure in your car tires is 2.50*105N/m2 at a temperature of 35.0ºC when you drive it onto a ferry boat to Alaska. What is their gauge pressure later, when their temperature has dropped to - 40.0ºC

What type of energy is stored in a stretched rubber band

At which position does the diver have the most kinetic energy

How would an unbalanced chemical equation convey misleading information about what took place during a chemical reaction?

A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is:

Emission of light from an atom occurs when an electron

Which is an example of transfroming potential energy to kinetic

Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that's above the ball.