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3 years ago

What's the formula for efficiency?

Physics

1 answer:

Neko [114]3 years ago

3 0

Answer:

r=P/C, where P is the amount of useful output ("product") produced per the amount C ("cost") of resources consumed.

Explanation:

Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output ("product") produced per the amount C ("cost") of resources consumed.

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Answer:

2491.23 kg/m³

Explanation:

From Archimedes principle,

R.d = weight of object in air/ upthrust in water = density of the object/density of water

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Where W = weight of the ceramic statue, U = upthrust of the ceramic statue in water, D = density of the ceramic statue, D' = density of water.

Making D the subject of the equation,

D = D'(W/U).................... Equation 2

Given: W = 28.4 N, U = lost in weight = weight in air- weight in water

U = 28.4 - 17.0 = 11.4 N,

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Substitute into equation 2,

D = 100(28.4/11.4)

D = 2491.23 kg/m³

Hence the density of the ceramic statue = 2491.23 kg/m³

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3 years ago

What are the equations of angular acceleration, angular velocity and theta?.

soldier1979 [14.2K]

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3 years ago

Your current exam mean is 97.2. if you receive a 99 on the next exam, this will have the effect of ______.

GarryVolchara [31]

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Learn more about the average mean here:

brainly.com/question/20118982

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1 year ago

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What's the formula for efficiency?​

What's the formula for efficiency?