Energy absorbed by the pole
A 57 kg pole vaulter running at 1.1 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
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the energy is transmitted through a long-distance power line that has a resistance of 100. What percentage of the power delivered by the generator is dissipated as heat in the power line?
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