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snow_tiger [21]
2 years ago
6

I have a test for my finals can y’all help me?

Physics
1 answer:
drek231 [11]2 years ago
7 0
What’s the question? I may be able to help
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The _____ of a mechanical wave is a direct measure of its energy.
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Light rays travel from one medium into another and refract away from the boundary. What changes about the light to cause this re
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a

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What is the net force on a truck if the force of friction is 31 N and the force of the engine is 79 N?
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Answer:

Fr = 48 [N] forward.

Explanation:

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2 years ago
Electromagnetic radiation with a wavelength of 525 nm appears as green light to the human eye. Calculate the frequency of this l
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5.71×10¹⁴ Hz

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v = λf................. Equation 1

Where v = speed of the electromagnetic radiation, λ = wavelength of the electromagnetic radiation, f = frequency

make f the subject of the equation

f = v/λ............. Equation 2

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Given: λ = 525 nm = 5.25×10⁻⁷ m,

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f = 5.71×10¹⁴ Hz

Hence the frequency of light is 5.71×10¹⁴ Hz

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3 years ago
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