What is the change in potential energy of spring
A spring whose stiffness is 1020 N/m has a relaxed length of 0.46 m. If the length of the spring changes from 0.31 m to 0.87 m, what is the change in the potential energy of the spring?
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A parallel-plate capacitor has a plate area of 0.2 m^2 and a plate separation of 0.1 mm. If the charge on each plate has a magnitude of 4 × 10^-6 C the potential difference across the plates is approximately:
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An electron, initially at rest is accelerated through a potential difference of 450 V. What is the speed of the electron due to this potential difference?
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