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3 years ago

5

Which is a renewable energy resource? coal petroleum wind natural gas

2 answers:

Burka [1]3 years ago

3 0

Wind because you can't really run out of it

alukav5142 [94]3 years ago

3 0

Answer:

wind is the correct answer.

Explanation:

wind is a renewable energy resource whereas coal, petroleum and natural gas are non renewable energy resources.

Renewable resources are those resources that can be replaced naturally that why it is unlimited in supply and it can be used regularly whereas nonrenewable resources are those which cannot be replaced by natural means, cannot be replenished and they are limited in supply

Wind is an example of renewable energy resources because they are unlimited and it can be replaced naturally.

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The human eye can readily detect wavelengths from about 400 nm to 700 nm. If white light illuminates a diffraction grating havin

nadya68 [22]

Answer:

The range of angles is from 17.50° to 31.76°

Explanation:

The diffraction grid equation is as follows:

$dsen\theta=m\lambda$

Clearing for $\theta$

$sen\theta=\frac{m\lambda}{d}$

$\theta=sen^{-1}(\frac{m\lambda}{d})$

where $\theta$ is the angle, $m$ is the order, in this case $m=1$ , $\lambda$ is the wavelength, and $d$ is defined as follows:

$d=\frac{1}{resolution}$

and since the resolution is 750 lines/mm wich is the same as $750lines/1x10^{-3}m$

$d$ will be:

$d=\frac{1}{750lines/1x10^{-3}m}=\frac{1x10^{-3}m}{750lines}=1.33x10^{-6}m$

wich is the distance between each line of the diffraction grating.

substituting the values for $m$ and $d$ :

$\theta=sen^{-1}(\frac{(1)\lambda}{(1.33x10^{-6}m)})$

And we need to find two angle values: one for when the wavelength is 400nm and one for when it is 700 nm. So we will get the angle range

$\theta=sen^{-1}(\frac{(400x10^{-9})}{(1.33x10^{-6}m)})=17.50$

and

$\theta=sen^{-1}(\frac{(700x10^{-9})}{(1.33x10^{-6}m)})=31.76$

The range of angles is from 17.50° to 31.76°

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