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suter [353]
3 years ago
13

How do we gather most of the information we get about the universe around us?

Physics
1 answer:
8090 [49]3 years ago
6 0

Answer:

B IS THE ONLY LOGICAL ANSWER

Explanation:

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Who proposed the theory that mental processes originated in the brain?
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Plato was the one that suggested that the brain is the mechanism of mental process.
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Can someone help me please​
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Examine the water molecules in the animation. After the wave has passed which of the following is true?
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What do scientists call water
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h20

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What is the relation between acceleration due to gravity and radius of the earth? ​
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The tops of the towers of the Golden Gate Bridge in San franciscoo , are 227 m above the water. Suppose a worker drops a 655 g w
yaroslaw [1]

Answer:

Kinetic energy is 1425.11 J.

Explanation:

Given:

Mass of the wrench is, m=655\ g=0.655\ kg

Height of fall is, h=227\ m

Force of resistance is, F=0.141\ N

Now, the total energy at the top is equal to the potential energy of the wrench at the top since the kinetic energy at the top is 0.

Now, potential energy at the top is given as:

U=mgh\\U=0.655\times 9.8\times 227\\U=1457.113\ J

Now, the potential energy at the top is converted to kinetic energy at the bottom and some energy is wasted in overcoming the resistance force by air.

Potential Energy = Kinetic energy + Energy to overcome resistance.

⇒ Kinetic energy = Potential Energy - Energy to overcome resistance.

Energy to overcome resistance force is the work done by the wrench against the resistance force and is given as:

W_{res}=Fh=0.141\times 227=32.007\ J

Therefore, Kinetic energy at the bottom is given as:

K=U-W_{res}\\\\K=1457.113\ J - 32.007\ J\\\\K=1425.106\approx1425.11\ J

Hence, the kinetic energy of the wrench be when it hits the water is 1425.11 J.

7 0
3 years ago
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