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.

Answer Link

Otras preguntas

Chemical weathering is highest in areas that are a. dry and arid. b. cold and frigid. c. cold and wet. d. very warm and wet.
Which of the following would not be considered a point source pollution contributor? a. an animal feedlot b. cattle on rangeland c. a paper mill d. a slaugh
Which theory was used to justify united states imperialism in the late 19th century? Edit Update: a. Evolution B) Social Darwinism C) Assimilation D) Marxis
2. What is an environmental sphere or earth system sphere? Name the earth’s five major environmental spheres and state the defining characteristics of each. I'm
What did President Johnson do that stunned political backers after he took office? He resigned from office rather than be impeached. He completely changed his v
The noble-gas notation for tin (Sn) will contain the symbol
Was it a mistake for the British to use mercenaries to help fight the war? Why or why not
3/5, 7/8, 5/6 least to greatest
65,754.59 rounded to the nearest tenth
Multiply the bottom h's. \frac{6h ^{2} }{2h ^{8}h h}