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Rama09 [41]
3 years ago
15

What is the speed of a wave if the wavelength is 3 meters and the frequency is 200hz

Physics
1 answer:
RideAnS [48]3 years ago
6 0
Wave speed = frequency * wavelength

Input the numbers into this equation :

Wave speed = 200 * 3

Work it out and you will get the answer :

Wave speed = 600 m/s
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Suppose your friend claims to have discovered a mysterious force in nature that acts on all particles in some region of space. H
kirill [66]

Answer:

             U = 1 / r²

Explanation:

In this exercise they do not ask for potential energy giving the expression of force, since these two quantities are related

             

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this derivative is a gradient, that is, a directional derivative, so we must have

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the esxresion for strength is

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let's replace

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in this case the force and the displacement are parallel, therefore the scalar product is reduced to the algebraic product

let's evaluate the integrals

            U - Uo = -B (- / 2r² + 1 / 2r₀²)

To complete the calculation we must fix the energy at a point, in general the most common choice is to make the potential energy zero (Uo = 0) for when the distance is infinite (r = ∞)

             U = B / 2r²

we substitute the value of B = 2

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7 0
3 years ago
Read 2 more answers
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