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Anna35 [415]
3 years ago
14

Give two advantages and disadvantages each of renewable and non renewable sources of energy

Physics
2 answers:
hoa [83]3 years ago
5 0
Advantage: do Not pollute the Environment ( as much as e.g. an exploding nuclar Power Station)
Disadvantage: do Not produce as much energy in the same time
aalyn [17]3 years ago
3 0
Hope this truly helps

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A pulley lifts a 72-N load with a force of 24-N. The input distance is 2m and the output distance is 0.5m. What is the efficienc
Debora [2.8K]

Answer:

Explanation:

Work done on the lever ( input energy ) = force applied x input distance

= 24 N x 2m = 48 J

Work done by the lever ( output energy ) = load x output distance

= 72 N x 0.5m = 36 J

efficiency = output energy / input energy

= 36 J  / 48 J

= 3 / 4 = .75

In percentage terms efficiency = 75 % .

5 0
3 years ago
When testing a home for radon, where is the most likely place for the highest detected level? A) the basement, due to ground see
german

Answer:

A

Explanation:

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5 0
3 years ago
Read 2 more answers
A wave of wavelength 0.3 m travels 900 m in 3.0 s. Calculate its frequency.
zzz [600]

Answer:

1000 Hz

Explanation:

<em>The frequency would be 1000 Hz.</em>

The frequency, wavelength, and speed of a wave are related by the equation:

<em>v = fλ ..................(1)</em>

where v = speed of the wave, f = frequency of the wave, and λ = wavelength of the wave.

Making f the subject of the formula:

<em>f = v/λ.........................(2)</em>

Also, speed (v) = distance/time.

From the question, distance = 900 m, time = 3.0 s

Hence, v = 900/3.0 = 300 m/s

Substitute v = 300 and λ = 0.3  into equation (2):

f = 300/0.3 = 1000 Hz

6 0
3 years ago
How to represent milligram in kilogram by standard formula?
Anettt [7]

Answer:

0.000001 kg

Explanation:

because 1 kg equal 1,000,000 milligrams

we take   \frac{1}{1,000,000} which equals 0.000001 kg

4 0
3 years ago
28. A reaction in which the products contain more chemical energy than the reactants is (4.7)
Serjik [45]
The answer is B !!!!!!!!! It’s B electrical
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