nanaamaamponsah65 nanaamaamponsah65
  • 18-05-2020
  • Physics
contestada

water is pumped from a stream at the rate of 90kg every 30s and sprayed into a farm at a velocity of 15m/s. Calculate the power of the pump.​

Respuesta :

MathPhys
MathPhys MathPhys
  • 27-05-2020

Answer:

340 W

Explanation:

Power = change in energy / change in time

P = ΔKE / Δt

P = ½ mv² / Δt

P = ½ (90 kg) (15 m/s)² / (30 s)

P = 337.5 W

Rounded to 2 significant figures, the power is 340 W.

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