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arsen [322]
4 years ago
10

In which senario is gravitational potential energy present?

Physics
1 answer:
sukhopar [10]4 years ago
7 0

The answer is B

Now I'm not sure if you're taking high school physics or middle school physics. But you have to know that gravitational potential energy has to be given with respect to something else, relative to something else.

For example if im sitting on a chair, relative to the chair my potential energy is 0, however with respect to earths core I have a huuuuuge potential energy.

So in these answers, they all have gravitational potential energy, but the answer the question is looking for is B

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What is the efficiency of an engine that exhausts 440 J of heat to a cold reservoir and receives 570 J of heat from a hot reserv
katrin2010 [14]

Answer:

Efficiency = 77%

Explanation:

Input energy = 570 J

Output energy = 440 J

To find the efficiency;

Efficiency = \frac {Out-put \; energy}{In-put \; energy} * 100

Substituting into the equation, we have;

Efficiency = \frac {440}{570} * 100

Efficiency = 0.7719 * 100

Efficiency = 77.19 ≈ 77%

Therefore, the efficiency of the engine is 77 percent.

7 0
3 years ago
How does space research and exploration affect Florida's economy? A) Launches of satellites discourage private industry. B) Tour
KengaRu [80]
D the answer is d definitely
8 0
4 years ago
good morning to you all! can someone please answer this, ill give you brainliest and your earning 50 points.
ankoles [38]

[Hello,BrainlyUser]

Answer:

False

Explanation:

Some places are more endowed than others.For example, some regions have lots of water (ocean and seas). While others have lots of minerals and forestlands. In addition, other have metallic rocks, wildlife, fossil fuels, and so on. Thus, we can conclude that Natural resources are not evenly distributes across the world.

[CloudBreeze]

6 0
2 years ago
A car slows down from 50.0m/s to 20.0m/s in 60s what is the acceleration
german

Answer:

-2m/s^2

Explanation:

final velocity = 20m/s

initial velocity = 50 m/s

time taken = 60 s

20-50=30m/s

30/60 = -2

7 0
4 years ago
The Earth’s diameter is about 8,000 miles; our Moon’s diameter is about 2,000 miles; how
Vitek1552 [10]

Three moons can fit inside the volume of the sun.

<h3>What is the moon?</h3>

The moon is a non luminous body found in the space. It could cause a solar eclipse when it comes between the sun and the earth.

Since the Earth’s diameter is about 8,000 miles and the Moon’s diameter is about 2,000 miles, to obtain the number of moons that could fit inside the sun we have;

8,000 miles/ 2,000 miles = 3

Hence, three moons can fit inside the volume of the sun.

Learn more about the moon:brainly.com/question/13538936

#SPJ1

6 0
2 years ago
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