16-05-2019
Physics

contestada

In each cycle, a heat engine performs 710 J of work and exhausts 1480 J of heat. What is the thermal effiency?

Respuesta :

MathPhys MathPhys

16-05-2019

Answer:

32%

Explanation:

For a heat engine, efficiency is work out divided by heat in:

η = Wₒ / Qᵢ

Since energy is balanced, heat in is the sum of work out and heat out:

Qᵢ = Wₒ + Qₒ

Therefore:

η = Wₒ / (Wₒ + Qₒ)

Given Wₒ = 710 J and Qₒ = 1480 J:

η = 710 / (710 + 1480)

η = 0.32

The thermal efficiency is 32%.

Answer Link

ACCESS MORE ACCESS MORE ACCESS MORE ACCESS MORE

Otras preguntas

The brain plays a role in shaping culture and culture plays a role in shaping the brain. This is pointed to as an example of how life-span development is

Haley measured the distances between her house and two of her friends’ houses. Ellen’s house is 1. 41 miles away from Haley’s, and Dirk’s house is 6,547 feet aw

A helix with 17 turns has height H and radius R. Charge is distributed on the helix so that the charge density increases like (i.e. proportional to) the square

PLS HELP!!! DUE IN 20 MINUTES

PLEASE HELP ASAP I WILL PUT BRAINSLIEST!!5 – 2(x + 6) = 14

Talmadge opposed _______________ for African Americans. A. disenfranchisement B. segregation C. racial integration D. literacy test

HURRRY PLS IM TIMED Read the excerpt from Roll of Thunder, Hear My Cry. T.J. gulped and leaned over, his head between his legs. “I . . . I'm sick, Stacey. I got

I WILL GIVE 69 POINTS TO WHOEVER FIGURES THIS OUT BUT YOU HAVE TO HURRY Thank you <3 1. Steinbeck decides that he must travel around America if he wants to

The rectangular floor of a storage shed has an area of 546 square feet. The length of the floor is 5 feet more than its width (see figure). Find the dimensions

A package falls off a truck that is moving at 30 m/s. Neglecting air resistance, the horizontal speed of the package just before it hits the ground is.