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Reika [66]
3 years ago
7

If the frequency of the wave is 140 hz, what is the speed of the wave?

Physics
1 answer:
saveliy_v [14]3 years ago
4 0
If f=140hz
speed=?
wavelength=?
without all information given, it would be difficult to answer but the formula is speed=frequency ×wavelength
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(2) The answer is attached in image form down below(please find attachment)
(3) </span>The answer is attached in image form down below(please find attachment)

(4) <span>Renewable energy is the energy which is generated from the natural sources i.e. sun, tides, wind etc. Examples are: Solar Energy, Wind energy( windmill) etc. for electricity generation.
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3) It has </span><span>low carbon emissions, therefore it is considered as green and environment friendly.
Disadvantages of Renewable Energy:
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2) Initial costs for setting up those plants and machinery is quite high.
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Non-Renewable energy is energy which is taken from the sources that are available on the earth in limited quantity. Sources may be <span>fossil fuels, natural gas, oil and coal etc.
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Disadvantages:
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3) They release toxic gases in the air when burnt which are the major cause for global warming.
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Now you should judge all by yourself which is the better energy source.
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