A heat pump absorbs heat from the cold outdoors at 3°c and supplies heat to a house at 20°c at a rate of 30,000 kj/h. if the power consumed by the heat pump is 3 kw, the coefficient of performance of the heat pump is

A cylindrical can is partially filled with water. The radius of the cylindrical can is 8 inches, and its height is 9 inches.

Which is occurring when work is being done? energy is being reverted. energy is being decreased. energy is being increased. energy is being transferred.?

A 1-kg ball is thrown at 10 m/s straight upward. neglecting air resistance, the net force that acts on the ball when it is half way to the top of its path is about

According to the evolutionary perspective of mate selection, why do men and women exhibit different preferences in mate selection? A. Each gender has differing hormone compositions. B. Each gender has differing societal expectations and restrictions.

When u wake up in the morning and you see few on the ground, where did it come from, and how did it form?

A person performs 300 j of work over the course of 60 seconds how much power they did required

If you have a 90 V power source with a 30-Ω and 60-Ω resistor in series, what is the voltage drop over the 60-Ω resistor? 30 V 2 V 60 V 90 V

How is thermal energy transferred during convection?

What is the purpose of a free body diagram? A. to show the velocity of an object B. to show the acceleration of an object C. to show the forces acting on an object D. to show the direction of motion vectors of an object

An initially uncharged air-filled capacitor is connected to a 5.83 V charging source. As a result, 3.41*10-5 C of charge is transferred from one of the capacitor's plates to the other.