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Viktor [21]
3 years ago
8

Why the output work for any machine can’t be greater than the input work

Biology
1 answer:
hodyreva [135]3 years ago
8 0
Because: Some of the work done by the machine is used to overcome the friction created by the use of the machine. ... Work output can never be greater than work input. Machines allow force to be applied over a greater distance, which means that less force will be needed for the same amount of work.

Hope this helps!
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Summarize how the functions of organelles in animal cells and plant cells are the same and different.
Alex_Xolod [135]
<span>Plant and animal cells have different structures. One structural difference of plant cells and animal cells is the presence of the plant cell’s </span>cell wall,<span> specialized plastids and a large central vacuole which are not found within animal cells.

Another difference is the garbage disposal of each cell. Centrosomes and lysosomes are found in animal cells but both do not exist within plant cells. The animal cell’s garbage disposal takes place in the lysosome while garbage disposal of plant cells takes place in the vacuole.</span>
3 0
3 years ago
Explain how scientists know what stars are made of.​
natita [175]

Answer:

Scientists are perhaps some of the smart few that make up the human population and are never short on knowledge. They research and discover and conduct tests to gain more knowledge, but the answer to your question is stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores, and scientist know this because of their research.

Explanation:

7 0
3 years ago
A grassland is experiencing a severe drought. The lack of rain is causing the grass to die and the ponds and creeks to dry up.
dusya [7]

The population of fish will decrease.

The population of grazing animals will decrease.

<h3>What is drought?</h3>

A drought is a prolonged period without enough precipitation/water to support people, animals or crops.

With less water, fish and other creatures have fewer places to dwell, swim, and evade predators. In the near run, shrinking streams and lakes necessarily result in fewer fish. Drought conditions can cause water temperatures to rise, affecting cold-water species such as native trout.

The population of grazing animals would decrease as the grass is a food source and without their food source, there would be no source of staying meaning that they would result to finding new food sources through migration likely.

7 0
2 years ago
Describe how the ecosystem changed from figure 1 to figure 4.<br> no links, please. <br> thank you
AysviL [449]

Answer:

In the ecosystem, the tides of the water rise in each figure. In figure 4, there is an increase in land animals present, and a lower amount of aquatic animals present. In the first figure, there are no birds, however there are multiple in the rest of the figures, this is possibly due to migration in the winter or that the ecosystem has drawn birds near. The types of plants change throughout each figure which is most likely to new adaptations such as more water available. The tides most likely rose because of more precipitation.

Explanation:

I hope this helped.

5 0
2 years ago
Read 2 more answers
Examine the cell diagrams shown. Which of the following choices identifies the eukaryotic cell for the correct reason?
Simora [160]

Answer:

Option a

Explanation:

A eukaroytic cell contains more organelles than prokaryotic cells, and it is much bigger and complex.

hope this helps and is right :)

6 0
2 years ago
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