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3 July, 06:45

Two cities, A and B, use the same number of identical wind turbines to generate power. City A has a steady wind speed of 10 knots. City B wind cAlways directly from high toward low speed varies between 8 and 12 knots, roughly the same proportion of time. Everything else being the same

a City A is producing more power.

b. City B is producing more power

c. Both cities produce the same amount power

d. Both cities produce the same amount energy

e. Not enough information is given

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  1. 3 July, 09:53
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    Answer: Option d.

    Explanation:

    We know that City A has a steady wind speed of 10 knots and City B has a variable speed between 8 and 12 knots roughly the same proportion of time.

    From this, we know that the average wind speed in city B is equal to the mid value in that interval.

    We can calculate the mid value as the sum between the lower extreme and difference between the extremes divided by 2.

    M = 8 + (12 - 8) / 2 = 8 + 2 = 10

    So the average wind speed in city B is 10 knots.

    From this we can conclude that both cities produce the same amount of power.
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