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ladessa [460]
2 years ago
6

3) How far will 20 N of force stretch a spring with a spring constant of 140 N/m?

Physics
1 answer:
muminat2 years ago
4 0

Answer:

7 meters, 2.8 meters

Explanation:

work done (nm) = force (n) * distance (m)

140= 20 * m

140/20 = m

m=7 meters

140= 50 * m

140/50 = m

m= 2.8 meters

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Answer:

n_{glass} = 1.6

Explanation:

\theta _{i} = Angle of incidence = 65.9°

\theta _{r} = Angle of refraction = 34.8°

n_{air} = Index of refraction of air = 1

n_{glass} = Index of refraction of glass = ?

Using Snell's law

n_{air} Sin\theta _{i} = n_{glass} \theta _{r}

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4 years ago
Calculate the wave speed i the wavelength =64m and the wave period = 4s
Marina86 [1]
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8 0
3 years ago
Below is an oscilloscope trace from an AC supply. Calculate the frequency of the supply if each horizontal division represents 0
GuDViN [60]

Answer:

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\boxed{frequency = \frac{1}{0.05} }

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8 0
3 years ago
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emmainna [20.7K]

Explanation:

It is given that,

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3 years ago
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Answer:

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3 years ago
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