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givi [52]
3 years ago
15

Consider a pan of water being heated (a) by placing it on an electric range and (b) by placing a heating element in the water. W

hich method is a more efficient way of heating water? Explain.
Engineering
1 answer:
Brrunno [24]3 years ago
7 0

Answer:

Method B is the more efficient way of heating the water.

Explanation:

Method B is more efficient because by placing a heating element in the water as in described in method B, the heat that is lost to the surroundings is minimized which implies that more heat is supplied directly to the water. Therefore, more heating is achieved with a lesser amount of electrical energy input. Whereas placing the pan on a range means more heat losses to the surrounding and as such it will take a longer time for the water to heat up and also take more electrical energy.

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Explanation:

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Determine the design moment strength for a W21x73 steel beam with a simple span of 18 ft when lateral bracing for the compressio
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This question is incomplete, the complete question is;

Determine the design moment strength (ϕMn) for a W21x73 steel beam with a simple span of 18 ft when lateral bracing for the compression flange is provided at the ends only (i.e., Lb = 18 ft). Report the result in kip-ft.

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Explanation:

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section  W 21 x 73 steel beam;

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also given that; fy = 50 ksi and Cb = 1.0

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12inch equals 1 foot

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QMn = 6795 k-inch / 12

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ok mann Thank you so much but this is 50 points not 500 points.....

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