Solve the problem.The radial flow field of an incompressible fluid is shown below. For which of the closed paths is the circulation not necessarily zero?
A. None of the above
B. Paths A, B, and C
C. Paths A and B only
D. Path C only
Answer: D
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Find the constant of proportionality k, and write the linear function relating the two variables.Suppose that y is inversely proportional to x. When x = 
, then y = 10.
A. k = 5; y = 
B. k = 5; y = 
C. k = 
; y = 
x
D. k = 
; y = 
Decide whether or not the functions are inverses of each other.f(x) = 4x - 5, g(x) = 
A. No B. Yes
The current San Francisco cable railway is driven by two large 16-foot-diameter drive wheels, called sheaves. Because of the figure-eight system used, the cable subtends a central angle of 270° on each sheave. Find the length of cable riding on one of the drive sheaves at any given time.
?
?
??a = 16
?
A. 38.7 feet B. 35.7 feet C. 40.7 feet D. 37.7 feet E. 33.7 feet
Convert the angle in radians to degrees.- 
A. -1° B. -60° C. -60?° D. 1°