shahzads
shahzads shahzads
  • 27-06-2021
  • Physics
contestada

Calculate the power of a train that uses 2MJ of chemical energy in 4
seconds.

Respuesta :

Muscardinus Muscardinus
  • 03-07-2021

Answer:

500 kW

Explanation:

Given that,

Energy of the train, E = 2 MJ = 2×10⁶ J

Time, t = 4 seconds

We need to find the power of the train. We know that,

Power = energy/time

So,

[tex]P=\dfrac{2\times 10^6}{4}\\\\P=500000\ W\\\\or\\\\P=500\ kW[/tex]

So, the power of the train is equal to 500 kW.

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