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3 years ago

14

Select the correct answer. What does a mechanical engineer do? O A. Designs buildings. OB. Designs roads. C. Designs consumer pr

oducts. D. Designs machines,

1 answer:

lbvjy [14]3 years ago

5 0

Answer:

d

Explanation:

The ans is d, from the word mechanical dealing with machines

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Explanation:

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2 years ago

garik1379 [7]

Answer:

The answer is below

Explanation:

1)

$R_{AB}=(500+500)||(500+500)\\\\R_{AB}=1000||1000\\\\R_{AB}=\frac{1000*1000}{1000+1000} \\\\R_{AB}=500\ \Omega$

2)

$R_{AB}=1000\|(1000+1000+1000)\\\\R_{AB}=1000||3000\\\\R_{AB}=\frac{1000*3000}{1000+3000} \\\\R_{AB}=750\ \Omega$

3)

Because of the short, the resistance is zero.

$R_{AB}=0$

4)

$R_{AB}=940\ \Omega$

5)

$R_{AB}=2200||2200||(2200+2200)\\\\R_{AB}=2200||2200||4400\\\\\frac{1}{R_{AB}}=\frac{1}{2200} +\frac{1}{2200} +\frac{1}{4400} \\\\\frac{1}{R_{AB}}=\frac{5}{4400}\\\\R_{AB}=880$

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$R_{AB}=(220+100)||470||330\\\\R_{AB}=320||470||330\\\\\frac{1}{R_{AB}}=\frac{1}{320} +\frac{1}{470} +\frac{1}{330} \\\\R_{AB}=120.7\ \Omega$

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Answer:

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2 years ago