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Art [367]
2 years ago
11

HELP ASAP!!!!!!! PLEASE WILL GIVE BRAINLIEST

Physics
1 answer:
PolarNik [594]2 years ago
7 0

Answer: The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. Not all molecules are free to diffuse. If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells.

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Answer:

Explanation:

Since the block is at rest in an elevated position, we can assume that it only has potential energy.

U=mgh is the formula for potential energy where U=potential energy, m= mass, g=acceleration due to gravity, and h=height.

Plug in known variables....

U=4kg*9.8m/s^2*20m

U=784 joules of potential energy or letter A.

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Answer:

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3 years ago
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Answer:

the answer is 168.75 J

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3 years ago
What is the answer to this?
jeka57 [31]

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I think it is the forth one

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A simple pendulum consists of a mass M attached to a string oflength L andnegligible mass. For this system, when undergoing smal
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The frequency of the pendulum is independent of the mass on the end. (c)

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