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3 years ago

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When I wave a charged golf tube at the front of the classroom with a frequency of two oscillations per second, I produce an elec

tromagnetic wave of frequency 2Hz. What is the wavelength of this wave? (a) 6.7 × 10−9m (b) 1.5 × 108m (c) 3.0 × 108m (d) 6.0 × 108m

1 answer:

solmaris [256]3 years ago

3 0

To solve this problem it is necessary to apply the concepts related to Wavelength depending on the frequency and speed of light.

The equation that meets these parameters is given by

$\lambda = \frac{c}{f}$

Where,

c = Speed of light

$\lambda = Wavelength$

f = Frequency

Our values are given as

$c = 3*10^8m/s \rightarrow$ velocity of light in free space

f = 2Hz

Replacing we have that

$\lambda = \frac{c}{f}\\\lambda = \frac{3*10^8}{2}\\\lambda = 1.5*10^8m$

Therefore the correct answer is B.

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Answer:

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b

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The diagram illustrating this is shown on the first uploaded

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The length of the string is $L = 10.7 \ cm = 0.107 \ m$

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The angle made by the string is $\theta = 5.58^o$

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$Tsin \theta = \frac{mv^2}{r}$

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substituting value

$T_x = 0.344 * 0.9574$

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substituting value

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substituting value

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