Question

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

Answer 1

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.