Aheat engine receives 7000 j of heat and loses 3000 j in each cycle. what is the efficiency of this engine?

57.1 %

Explanation:

The efficiency of the engine is given by:

where the numerator corresponds to the heat used by the engine, while the denominator corresponds to the heat in input to the engine.

In this problem, the heat in input is

while the heat used is

So, the efficiency is

volume: 22

density: 7.04

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong