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Harrizon [31]
3 years ago
5

If the kinetic and potential energy in a system are equal, then the potential energy increases. What happens as a result?

Physics
1 answer:
faltersainse [42]3 years ago
7 0
Kinetic energy will go down accordingly (if no external force)
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Find the cost of excavating a space 84 ft long, 42 ft wide, and 9 ft deep at a cost of $39/yd3. (simplify your answer completely
m_a_m_a [10]

The cost of excavating a space of 84 ft long, 42 ft wide, and 9 ft deep is $45864

Information about the problem:

  • Space long= 84 ft
  • Space wide= 42 ft
  • Space deep= 9 ft
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  • Total cost= ?

To solve this problem, we have to state the equation using the information of the problem:

Calculating the volume of the total space:

space volume = space long * space wide * space deep

space volume = 84 ft * 42 ft * 9 ft

space volume = 31752 ft3

By converting the volume from ft3 to yd3, we have:

31752 ft3 * (0,037037 yd3 / 1 ft3) = 1176 yd3

Calculating the cost of excavating the volume space:

Total cost = space volume * cost by yard3

Total cost = 1176 yd3 * $39/yd3

Total cost = $45864

<h3>What is volume?</h3>

It is the space occupied by a body, it is calculated by multiplying its dimensions, for example: length, height and width.

Learn more about volume at: brainly.com/question/12628341

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4 0
1 year ago
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Delvig [45]

Answer:

Sound waves are produced when something vibrates.  

Explanation:

The vibrating body causes the medium (water, air, etc.)  Vibrations in air are called traveling longitudinal waves, which we can hear. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.

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3. The honeycomb-like appearance of this sandstone is a result of.
sladkih [1.3K]

Answer:

The answer is "Option C".

Explanation:

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3 years ago
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What are Earth's mineral resources and how long might<br> reserves last?
amm1812
Reserves might last 53.3 years.

Earth’s mineral resources:

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All except d. mass .........
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