Multiple choice general knowledge science & technology

How many Ergs are there in 1 Joule?

  1. 102

  2. 104

  3. 106

  4. 107
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D Correct answer
Explanation

The joule and erg are both units of energy/work in different systems. 1 joule = 1 newton × 1 meter = 1 kg·m²/s² in MKS. 1 erg = 1 dyne × 1 cm = 1 g·cm²/s² in CGS. Converting: 1 J = 10^7 erg (10 million ergs). This is a fundamental conversion between metric energy systems.

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