hernandezjennif1 hernandezjennif1

07-11-2017
Physics

contestada

In each cycle, a heat engine receives an input of 1540 J of heat and exhausts 1030 J of heat. What is the thermal efficiency?
0.274

0.456

0.669

0.331

Respuesta :

barnuts barnuts

17-11-2017

The thermal efficiency of a combustion system is simply the ratio of heat out and heat in, that is:

efficiency = heat out / heat in

efficiency = 1030 J / 1540 J

efficiency = 0.669

So the efficiency is 0.669

Answer Link

Otras preguntas

18. Which of the Constitutional Framers looked to create a national Bill of Rights during the First Constitutional Congress?

a friend has a 84% average before the final exam for a course. that score includes everything but the final, which counts for 15% of the course grade. what is t

an air bubble of radius 6.5 cm is released from the mouth of a diver. at the diver's depth the pressure is 1.15 atm . (we'll learn in chapter 13 why the diver's

which of the following statement(s) is/are correct? i) stars like the sun generate energy through nuclear fusion. ii) the most stable nucleus in terms of bindi

Spiral Review 12. What property does the statement show? (4 x 8) X 3 = (8 × 4) × 3

Please help me with this math

horizontal integration through m&a can help firms strengthen their competitive position by increasing the differentiation of their product and service offer

which expression is not equivlent to 8 + ( n - 4)

SOMEONE PLS HELP THIS IS DUE TODAY Mark needs to cut a board to use for a project. The board is 12 feet long. He first has to cut off 2 1/4 feet from one end o

choose the most fluid revision of the following paragraph