Molten metal is poured into the pouring cup of a sand mold at a steady rate of 400 cm3/s. the molten metal overflows from the pouring cup and flows into the downsprue. the cross section of the sprue is round, with a diameter at the top = 3.4 cm. if the sprue is 20 cm long, determine the proper diameter at its base so as to maintain the same volume flow rate.

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

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a=d/t

a="triangle"v/t

explanation:

a = acceleration

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: