Question 14

Part A

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A biophysicist grabs the ends of a DNA strand with optical tweezers and stretches it 25 μm. How much energy is stored in the streiched molecule if its spring constant is 0.044 pN/um?

Express your answer with the appropriate units.

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U= Value

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J

80 F

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G

14

➤11

FIG

4

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14 of 20

V

Constants

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