Four resistors having values of 10 ohms, 20 ohms, 25 ohms, and 100 ohms are connected in parallel. What is the total resistance in ohms?

a. 5
b. 10
c. 20
d. 50


a. 5

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Jennifer and Rex both receive a dividend from their 401(k) retirement plan every 6 months. The earning rates for this year have been 5% per year, compounded quarterly for Jennifer, and 4.85% per year, compounded monthly for Rex. Rex felt good about this because he knew the monthly com­pounding on his plan would make his APY higher than Jennifer’s APY.

(a) Is Rex correct? Explain your answer. (b) What is the effective rate for each plan on the basis of the payment period?

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What type of siding is the most commonly installed in residential applications?

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Circuit breaker ratings are given _____.

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