Aheat engine receives an amount of energy qh= 790 kj by heat transfer from a high temperature thermal reservoir at th=950 k. energy is rejected by heat transfer to a lower temperature thermal reservoir at t1=590 k. if waste heat in the amount of q1=160 kj is rejected to the low temperature thermal reservoir during each cycle.

a) solve for the maximum theoretical efficiency that an engine in this situation could operate with. 0.379

b) solve for actual efficiency that the engine is operating with.

c) which of the following best describes the manner in which the cycle is

-reversibly or impossibly?

(a)

(b)

(c) Impossibly

Explanation:

Given:

(a)

Now the maximum theoretical efficiency of the engine:

(b)

Actual efficiency of the heat engine:

(c)

This is impossible because the actual efficiency can never be greater than the ideal (Carnot) efficiency of a heat engine.

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation: