Answer:
because some waste heat is always produced produced in a heat engine.
Explanation:
the fraction of heat input that is converted to a net work output is a measure of the performance of the heat engine and is called the thermal efficiency.Since the machine does not contain a source of energy ,nor can it store energy ,from this conversation of energy the power output of machine can never be greater than its input,so efficiency can be less than 100%.
Answer:mass of the object,how much force earth exerts on the object,and shape of the object
Explanation:
Answer:
magnitude of the velocity
Explanation:
<span>The blades should turn in two directions.</span>