Answer:
electric energy = 980 J
Step-by-step explanation:
Given,
Diameter of wind turbine = 100 m
Speed of wind,v = 7 m/s
Density of air = 1.25 kg/m
Hence, the total mass of air enters into turbine =Speed of wind x Diameter of wind turbine
= 1.25 x 100
= 125 kg
Hence, total mechanical energy of turbine can be given by,
= 3062.5 J
Efficiency of turbine = 32%
Hence,
total electric energy = 32% of mechanical energy
= 980 J
So, the total electric energy produced by the turbine will be 980 J.
Answer:
B) First, find two areas using (4m x 10m = 40m2) and (8m x 3m = 24m2). Next, add (40m2 + 24m2 = 64m2).
Step-by-step explanation:
Samuel should is looking to find the area of his basement in order to cover it with carpet.
An area is calculated by multiplying two dimensions (so answers A and D are not it).
Best solution is to divide the area into two large rectangles then ADD them together to get the total area.
The only scenario where he could have subtracted something based on his plan is if he would have multiplied the 10m by the 12m then subtracted the area that is not part of his basement (7mx8m). He would have achieved the same result of course, but by going a different way.
To find the average, divide change in weight by change in weeks.
(149-134)/(8-13)
You should get a negative number, because he loses weight.
Answer: 3/8
Step-by-step explanation: The probability of getting a tail is 1/2, then another tail, is 1/2×1/2, and then a head, is (1/2)^3. There are 3 ways to order this, so the 3/8 is the probability.
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plz don't be mad I need points
