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3 years ago

If the efficiency of a gasoline engine is 25%, what happens to the missing 75% of the energy in the fuel?

Biology

1 answer:

hram777 [196]3 years ago

5 0

The 75% energy which does not do any useful work gets dissipated as thermal energy in gasoline engines.

Explanation:

The efficiency of any engine like gasoline engine is the ratio of work done in contrast to heat or energy provided.

Gasoline engines are internal combustion engine. The thermal efficiency is calculated of these engines.

work done or efficiency= $\frac{work done}{heat absorbed}$

or heat absorbed is divided by heat used in doing work

the friction and in other forms heat gets lost.

In gasoline engine about 65 to 75 % heat gets emitted without any useful work done. The heat gets lost in friction, air turbulence, noise and work input to turn on the engine. After the dissipation of heat in it only 25% is used up by vehicle having gasoline engines.

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After photosynthesis, energy that the coral can use is stored in

katen-ka-za [31]

Answer:

Energy is stored in glucose molecules C6H12O6

Explanation:

Producers make sugars stored as monomers bonded together to form polysaccharides, long chain hydrocarbon molecules as a result of the process of photosynthesis. These molecules, like the monosaccharide glucose, store converted solar energy as stable chemical energy in covalent bonds. In covalent bonding, the elements share electrons with each other.

These high-energy bonds are stable and not easily destabilized or broken. The energy is retrieved the the process of respiration in the mitochondria.

Glucose is broken down, while energy is transferred to bonds between ADP and inorganic phosphate, to produce ATP (adenosine triphosphate).

Eg. for aerobic respiration...

C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP

glucose+ oxygen → carbon dioxide+ water+ energy

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3 years ago

15) Food habits in a given culture are largely based on which of the following? (Select all that apply.)

Elza [17]

Answer:

D, C and A are the correct options.

B is less likely rather is a personal reference.

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2 years ago

About 75% of human body hair is NOT found on the head.

ryzh [129]

Thanks i learnt something new

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2 years ago

Name three organelles or structures found in plant cells but NOT in animal cells. Group of answer choices nucleus chloroplast mi

BARSIC [14]

Answer:

Cell wall, chloroplast, and central vacuole

Explanation:

Cell wall, chloroplast, and central vacuole are present in a plant cell but not in the animal cell.

Nucleus, cell membrane, and cytoplasm present in both plant and animal cells.

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2 years ago

The classification of some organisms has changed. Which new process is used to reclassify organisms?

Airida [17]

Answer:

C. Organisms are now divided into three kingdoms.

Explanation:

In the early 1860s, a German scientist named Ernst Haeckel suggested using a three kingdom system of classification. Haeckel's three kingdoms were Animalia, Plantae, and Protista.

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3 years ago