Power from a Windmill The power P that can be obtainedfrom a windmill is directly proportional to the cube of thewind speed s.(a) Write an equation that expresses this variation.(b) Find the constant of proportionality for a windmill thatproduces 96 watts of power when the wind is blowing at20 mi/h.(c) How much power will this windmill produce if the windspeed increases to 30 mi/h?
Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
Power from a Windmill The power P that can be obtained
from a windmill is directly proportional to the cube of the
wind speed s.
(a) Write an equation that expresses this variation.
(b) Find the constant of proportionality for a windmill that
produces 96 watts of power when the wind is blowing at
20 mi/h.
(c) How much power will this windmill produce if the wind
speed increases to 30 mi/h?
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