contestada

a certain engine has a second-law efficiency of 85%. During each cycle, it absorbs 480J of heat form a reservoir at 300C and dumps 300J of heat to a cold termperature reservoir.What is the temperature of the cold reservoir?

Respuesta :

muhammadjonedkhattak

Answer:

Tc = 85.95 K

Explanation:

Given:

Th = 300 C = 573 K

η = 85 % = .85

Tc=?

so we have equation for Efficiency

η = 1 - ( Tc/Th)

⇒Tc = (1 - η) Th

Tc = (1 - .85) x 573 K

Tc = 85.95 K

Otras preguntas

Q&A Education