2 years ago

Answer them all please!!

Physics

1 answer:

stepladder [879]2 years ago

7 0

Answer:

Digestive = large instestine

respiratory = lungs

circulatory red blood cell

neurons=nerves

Explanation:

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A 0.72-m long string has a mass of 4.2 g. The string is under a tension of 84.1 N. What is the speed of a wave on this string?

frosja888 [35]

The speed of the wave in the string is 83.4 m/s

Explanation:

For a standing wave in a string, the speed of the wave is given by the equation:

$v=\frac{1}{2L}\sqrt{\frac{T}{m/L}}$

where

L is the length of the string

T is the tension in the string

m is the mass of the string

In this problem, we have:

L = 0.72 m

m = 4.2 g = 0.0042 kg

T = 84.1 N

Solving the equation, we find the speed of the wave:

$v=\frac{1}{2(0.72)}\sqrt{\frac{84.1}{0.0042/0.72}}=83.4 m/s$

Learn more about waves:

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2 years ago

A motorcycle has a mass of 250 kg and a velocity of 68 m/s, what is it’s momentum?

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Since momentum is equal to mass multiplied by velocity, you would mulitply 250 grams by 68 m/s.
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2 years ago

An Airplane taxis onto the runway going at 10 m/s. If it can accelerate steady at 3

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Explanation:

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