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(a) The resultant force is $\"\"$ newtons.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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(b) If each person exerts a force of $\"\"$ newtons, what is the resultant force.

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$\"\"$

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