3 years ago

A reflectance curve is produced when ___________ analysis is used to describe the light wavelengths reflected by objects.

Physics

1 answer:

stiv31 [10]3 years ago

3 0

Answer:

Spectral

Explanation:

I just answered this question on USA test prep

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Match the units in the right hand column with the terms in the right hand column

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Answer:

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3 years ago

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A process generates 250 watts of useful energy and 600 watts of waste energy. WhT is the efficiency of the process?

Cloud [144]

The efficiency of the process is 42%

From the question given above, the following data were obtained:

Useful energy = 250 watt

Wasteful energy = 600 watt

<h3>Efficiency =? </h3>

The efficiency of the process can be obtained as illustrated below:

$efficiency \: = \frac{useful \: energy}{wasteful \: energy} \times 100 \\ \\ efficiency \: = \frac{250}{600} \times 100 \\$

<h3>Efficiency = 42%</h3>

Therefore, the efficiency of the process is 42%

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3 years ago

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Answer:

The net force is 15 newtons

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jenyasd209 [6]

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Yes, you would consider the mass × gravity at the centre of gravity of the object in question to cause a moment, hence it should be included in your resolution

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2 years ago

A wind turbine has a total input power of 2 500 kW.

Sonbull [250]

Answer:

Output power = 500 KW

Explanation:

Given the following data;

Efficiency = 20%

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To find the output power;

$Efficiency = \frac {Out-put \; power}{In-put \; power} * 100$

Substituting into the equation, we have;

LET Output power = OP

$20 = \frac {OP}{2500} * 100$

Cross-multiplying, we have;

$20 * 2500 = OP * 100$

$50000 = OP * 100$

$OP = \frac {50000}{100}$

Output power = 500 KW

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3 years ago