What is the area of a circular putting green that has an average diameter of 92 feet?
What will be an ideal response?
6,644 ft.2
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Verify that the flow is turbulent.
The mechanical-energy balance provides a basis for estimating pressure drop owing to friction in fluid flow. For steady flow of an incompressible fluid in a horizontal pipe of constant cross-sectional area, it may be written,
where 
is the Fanning friction factor. Churchill gives the following expression for 
for turbulent flow:
Here, Re is the Reynolds number and ? /D is the dimensionless pipe roughness. For pipe flow, Re ? u?D/?, where D is pipe diameter and ? is dynamic viscosity. The flow is turbulent for Re > 3000.
Consider the flow of liquid water at 25°C. For one of the sets of conditions given below, determine 
and 
Assume ? /D = 0.0001. For liquid water at 25°C, ? = 
, and ? =
(a) D = 2 cm, u = 1
(b) D = 5 cm, u = 1
(c) D = 2 cm, u = 5 
(d) D = 5 cm, u = 5
The disease that looks like white dust on the leaves is:
A) rust B) smut C) ?powdery mildew D) bermudagrass decline
What is the cooling capacity of reefer units measured in?
A. BHP (watts) B. lb.-ft. (N.m) C. atms (bar) D. BTU (joules)
Considering the dimensions of a block face to be 15 5/8" long and 7 5/8" wide and assuming mortar joint width to be 3/8" for both bed joints and head joints, what is the length in inches of 4 block faces and 3 mortar joints?
What will be an ideal response?