Question

1 point
During a cyclic process, a heat
engine absorbs 500 J of heat from
a hot reservoir, does work and
ejects an amount of heat 300 J into
the surroundings (cold reservoir).
Calculate the efficiency of the heat
engine?
​

Answer 1

Answer:

The efficiency of heat engine is given by

μ = 1 – 0.6 = 0.4

The heat engine has 40% efficiency, implying that this heat engine converts only 40% of the input heat into work.

Answer 2

Explanation:

When thyroid hormone levels are low (hypothyroidism), your body doesn't break down and remove LDL cholesterol as efficiently as usual. LDL cholesterol can then build up in your blood. Thyroid hormone levels don't have to be very low to increase cholesterol.