Physics, asked by manishsahu49official, 2 months ago

can anyone please tell me what happened in this step how 2π became 4π

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Answered by missanonymous40

1

just multiply the whole thing with 2 so m becomes 2m and 2 pi becomes 4 pi

Answered by pujithk6

1

because the both numerator and the denominator are multiplied by 2

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