1. For the sprue described in Problem 10.49, what runner diameter is needed to ensure a Reynolds…

1. For the
sprue described in Problem 10.49, what runner diameter is needed to ensure a
Reynolds number of 2000? How long will a 330 cm3 casting take to fill with such
a runner?

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2. How long
would it take for the sprue in Problem 10.49 to feed a casting with a square
cross section of 50 mm per side and a height of 100 mm? Assume that the sprue
is frictionless.