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yarga [219]
3 years ago
15

A slight breeze is blowing over the hot tub above and yields a heat transfer coefficient h of 20 W/m2 -K. The air temperature is

75 F. If the surface area of the hot tub is 7.5 m2 , what is the heat loss (heat rate) due to convection? The temp of Hot Tube is 102F.
Engineering
1 answer:
patriot [66]3 years ago
7 0

Answer:4050 W

Explanation:

Given

Heat transfer Coefficient(h)=20 W/m^2-K

Air temperature =75 F

surface area(A)=7.5 m^2

Temperature of hot tube is 102 F

We know heat transfer due to convection is given by

Q=hA\left ( \Delta T\right )

Q=20\times 7.5\left ( 102-75\right )=4050 W

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ollegr [7]

Answer:results for h should on the same order of magnitude of the value I provided. If it isn't, check your units. Update to you calculated values for h and resolve your model.

Explanation:

4 0
3 years ago
The “Sun-Star” Company has purchased new office furniture for their offices at a retail price of $100,000. An additional $12,000 h
Zinaida [17]

Based on the cost of the furniture, the following are true:

  • a. $10,400.
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<h3>Depreciation in second year</h3>

Depreciation per year = (Cost of furniture - Salvage value) / Useful life

Cost will include both the purchase price and the charge for insurance and shipping.

= (100,000 + 12,000 - 8,000) / 10

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<h3>BV at end of first year</h3>

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4 0
3 years ago
Rewrite the following nested if-else statement as a switch statement that accomplishes exactly the same thing. Assume that num i
seropon [69]

Answer:

Answer explained below

Explanation:

The following is the nested if-else statement:

% if-based statement

if num < -2 ||  num > 4

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else

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          if num >= 0

              f2(num)

          else

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          end

     else

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     end

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The nested if-else statement can be replaced by switch statement as shown below:

switch num

    case(0, 1, 2)

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    case(-2, -1)

         f3(num)

    case(3, 4)

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    otherwise

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8 0
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8 0
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Answer:

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