2 years ago

What is the wavelength of the wave pictured above?

Physics

1 answer:

love history [14]2 years ago

3 0

Answer:

its counting by 4 the multi 4,8,12,16

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As part of a safety investigation, two 1900 kg cars traveling at 20 m/s are crashed into different barriers. Part A Find the ave

DedPeter [7]

Answer:

- $29.2\times 10^{3} N$

Explanation:

We are given that

Mass of cars= m=1900 kg

Initial speed of car=u=20 m/s

Final speed of car=v=0

Time= $\Delta t$ =1.3 s

We have to find the average force exerted on the car.

Average force= $\frac{change\;in\;momentum}{\Delta t}$

$F_{avg}=\frac{mv-mu}{1.3}$

$F_{avg}=\frac{1900(0)-1900(20)}{1.3}$

$F_{avg}=\frac{-38000}{1.3}=-29.2\times 10^{3} N$

Hence, the average force exerted on the car that hits a line of water barrels=- $29.2\times 10^{3} N$

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3 years ago

7. The energy source used to produce most of the electrical energy in the United States is ____________________.

Fudgin [204]

Fossil fuels like coal, natural gas and oil.

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seropon [69]

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The diagram shows how an image is produced by a plane mirror.

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I had this question on a quiz, it was X.

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You are driving at 30.0 m/s on a freeway curve of radius 25.0 m. What is the magnitude of your acceleration?

mote1985 [20]

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36.0 m/s^2

Explanation:

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