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2 years ago

How can you make the work output of a machine greater than the work input?

Physics

1 answer:

Vsevolod [243]2 years ago

7 0

Answer: D) none of the above

Explanation: This is a classic problem of thermodynamics, and refers to the principle of conservation of energy to give a correct answer

Option A) can be ruled out since no matter how much friction is reduced, it will always exist and therefore some energy will be lost

option B) and C) are out of context since the loss of work or energy will continue to exist even if those values are modified, so they do not answer the question

D) is the correct one since it should be said that this is not possible (so far...) as it goes against the conservation of energy and this option is none of the above

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If an object is accelerating, it is traveling the same distance for each time interval of its motion

Anika [276]

Answer:

false

Explanation:

if an object is accelerating the object will not travel the same distance every time interval

4 0

3 years ago

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If everything that is created has to have an end, what could cause the end of the universe itself?

bearhunter [10]

Answer:

The Big Crunch hypothesis is a symmetric view of the ultimate fate of the universe. Just as the Big Bang started as a cosmological expansion, this theory assumes that the average density of the universe will be enough to stop its expansion and begin contracting.

Explanation:

hope it helps

5 0

3 years ago

Climate and weather are related but different. Which of the following describes the climate of a place?

iren2701 [21]

Climate. What does it mean?

Climate is a long-term weather, or recurring every time. Examples of climate? Every day, the desert is hot the day and cold in the night. This won't change, at least for hundreds, thousands, millions of years. This is climate.

Weather. What does it mean?

Weather is short-term, usually not recurring every time. Examples of weather? Today is very sunny. This will change-for all we know, tomorrow will be cloudy and rainy!

This is why your answer will NOT be a meteorologist predicts that tomorrow will be sunny and warm. This is weather, because it is only tomorrow.

This is why your answer will NOT be fertile soil makes farms in the region very productive. This does not relate to weather, or climate.

This is why your answer will NOT be the temperature dropped below freezing every night last week. This will only be "last week", not the week right now or the week after this week.

Therefore, your answer is "Thunderstorms frequently occur in the summer. This is because that's the climate in that part- thunderstorms always happen.

Brainliest?

4 0

3 years ago

In a cell what substance is analogous to a factory manger and where would it be found?

charle [14.2K]

The substance is DNA and it would be found in the nucleus.

5 0

3 years ago

When you swim in a pool, Select one: a. rolling friction occurs. b. fluid friction occurs. c. sliding friction occurs. d. static

Oduvanchick [21]

Answer:

b. fluid friction occurs

Explanation:

Water is a liquid and both going through air gas and liquid cause fluid friction.

5 0

3 years ago