Determine how much work does the heat pump need

Assignment Help Physics

Reference no: EM13559320

A heat pump removes 2000 J ofheat from the outdoors and delivers 3160 J of heat to the inside of a house.

(a) How much work does the heat pump need?

(b) What is the coefficient of performance of the heat pump?

Reference no: EM13559320

Questions Cloud

What is the increase in the surface area of the cube : The length of each edge of an aluminum cube is 0.068 m. Thecube is heated to 152°C from 25°C. What is the increase in the surface area of the cube

Calculate how many beats per second are heard : Two identical mandolin strings under 200 N of tension aresounding tones with frequencies of 523 Hz. How many beats per second are heard

Obtain the volume percentage of ethylene glycol in solution : An antifreeze solution is made by mixing ethylene glycol(p=1116 kg/m3) with water. obtain the volume percentage of ethylene glycol in the solution

Find the spheres electric potential before the discharge : An energy of 39 joules is stored in a metal sphere. If a sparkcarrying 3 x 10-4 C discharges the metal sphere, find the sphere's electric potential before the discharge

Determine how much work does the heat pump need : A heat pump removes 2000 J ofheat from the outdoors and delivers 3160 J of heat to the inside of a house. How much work does the heat pump need

Calculate how much heat is converted into work : Five thousand joules of heat is put into a Carnot engine whosehot and cold reservoirs have temperatures of 540 and 200 K, How much heat is converted into work

What is the temperature inside the refrigerator : A Carnot refrigerator is used in a kitchen in which thetemperature is kept at 304 K. What is the temperature inside the refrigerator

A polystyrene rod consisting of two cylindrical portions : A polystyrene rod consisting of two cylindrical portions AB and BC is restrained at both ends and supports two 6-kip loads as shown. Knowing that E = 0.45 X 106 psi, determine (a) the reactions at A and C, (b) the normal stress in each portion of the..

Find by how many degrees must the temperature be lowered : A cylindrical brass rod (cross-sectional area = 1.3 x10-5 m2) hangs vertically straight down froma ceiling. By how many degrees must the temperature be lowered

User Account

All Pages