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SpyIntel [72]
3 years ago
13

Suppose wave pulses in an aquarium are produced by a mechanical motor that moves a bob up and down at the surface. The setup use

s a 10-W motor and has a period of 1.9 s between bobs. How much kinetic energy is in each pulse.
Physics
1 answer:
-Dominant- [34]3 years ago
3 0

Answer:

kinetic energy in each pulse = 9.5J

Explanation:

  • The concept used here is that of work, energy and power.

  • Power P = Work /Time

  • Work = energy in this case

  • E = Power x time = Pt

  • but Power = 10W and t = 1.9s

  • Energy E = 10W x 1.9s = 19J

Conventionally, overall energy = kinetic + potential

Hence kinetic energy in each pulse = half of the total energy = 0.5 x 19

energy = 9.5J

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