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Andru [333]
3 years ago
12

Local currents are often formed as a result of _____.

Physics
1 answer:
Amiraneli [1.4K]3 years ago
3 0
Tides......................................
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Answer: a boy jumping down

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MATCH THESE ^-^ Match Newton's law with the correct statement.
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1 and A
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3 years ago
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A force of 40 N is required to hold a spring that has been stretched from its natural length of 10 cm to a length of 15 cm. How
Sati [7]

0.36 J of work is done in stretching the spring from 15 cm to 18 cm.

To find the correct answer, we need to know about the work done to strech a string.

<h3>What is the work required to strech a string?</h3>
  • Mathematically, the work done to strech a string is given as 1/2 ×K×x².
  • K is the spring constant.
<h3>What will be the spring constant, if 40N force is required to hold a 10 cm to 15 cm streched spring?</h3>
  • The force experienced by a streched spring is given as Kx. x is the length of the spring streched from its natural length.
  • Then K = Force / x.
  • Here x = 15 - 10 = 5 cm = 0.05 m
  • K = 40/0.05 = 800N/m.
<h3>What will be the work required to strech that spring from 15 cm to 18 cm?</h3>
  • Work done = 1/2×k×x²
  • Here x= 18-15=3cm or 0.03 m
  • So, W= 1/2×800×0.03² = 0.36 J.

Thus, we can conclude that the work done is 0.36 J.

Learn more about the spring force here:

brainly.com/question/14970750

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6 0
2 years ago
Ivan exerts 20 N of force to lift a basket 2 m. He then carries the basket 5 m across a room to place it on a shelf. Ivan does w
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A) <span>Ivan does work when he lifts the basket

B) Work = Force * displacement 
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So, The Amount of work he does is 40 Joules

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7 0
3 years ago
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7. Answer each of the following questions if the student applied a 550N force to a 100kg box on the same surface. What would be
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F=ma
550=100a
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a=5.5 m/s²
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3 years ago
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