Problema Solution
For an engine with a displacement of 2.8 L, the function d(n)= 0.75sq root 2.8 can be used to determine the diameter of the carburetor's opening. d(n) is measured in millimeters and n is the number of revolutions per minute(rpm)at which the engine achieves peak performance. If a carburetor's opening is 81 mm, at what rpm will the engine produce peak power?
Answer provided by our tutors
d(n)= 0.75 sq root 2.8 or this can be written as
d(n) = 0.75*(2.8)^0.5
there must be some mistake in the function since there is no n in it
lets suppose the function is d(n) = 0.75*n^(-2.8)
n = ?
d(n) = 81 mm
0.75*n^(-2.8) = 81
n^(-2.8) = 81/0.75
n^(2.8) = 0.75/81
n = (0.75/81)^(1/2.8)
n = 0.1878 rpm