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Question

What is the relationship between joule and erg?


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Solution

Step 1: Definition

  1. An erg is the amount of work done by exerting a force of one dyne across a one-centimeter distance. It will be one gram centimeter-squared per second-squared throughout CGS base units.
  2. A joule seems to be the amount of work done by exerting a force of one newton across a one-meter distance.

Step 2: Finding the relationship between joule and erg

1joule=1newton×1m=1s21kg×1m×1m=1s21000g×100cm×100cm=107erg

Therefore, the relationship between joule and erg 1J=107erg.


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