The graph in the figure shows a cycle for a heat engine for which 
=35 J.What is the thermal efficiency of this engine? 
Definitions:
Endocrine Glands
Glands that produce and release hormones directly into the bloodstream to regulate various bodily functions.
Stomach
A muscular organ in the digestive system that produces acid and enzymes to digest food.
Ileocecal Valve
Valve formed by the ileocecal sphincter between the ileum and the cecum.
Large Intestine
Portion of the digestive tract extending from the small intestine to the anus.
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