The normal beating of a heart can be upset by an electrical current as small as _____.

a. 1mA
b. 30mA
c. 75mA
d. 1,000mA


c. 75mA

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A low-head hydro generating system is supplied by a stream flow of 1,358 gpm.  This stream is fed by two branches.  One branch has a flow of 582 gpm.  Find the flow of the second branch.

Fill in the blank(s) with the appropriate word(s).

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Sweated copper pipe tees are insulated _____.

a. using mastic to secure the insulation to the pipe b. using only pre-fabricated covers c. by saddle-cutting the main line insulation d. after the branch of the tee is insulated

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Any material that permits current to move through it is a(n) ____________________

Fill in the blank(s) with the appropriate word(s).

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Determine the amount of rebar needed for the grade beam in Problem 49. Allow for three inches of cover. Add 10 percent for lap and waste to the continuous bars.

What will be an ideal response?

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