Question

what is the relationship between joule and erg​

Answer 1

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An erg is the amount of work done by a force of one dyne exerted for a distance of one centimeter. In the CGS base units, it is equal to one gram centimeter-squared per second-squared (g. cm2/s2). It is thus equal to 10−7 joules or 100 nanojoules (nJ) in SI units.

Answer 2

Joule is the SI unit of energy while erg is the cgs unit of energy.

1 Joule of Energy = 1 Newton x 1 metre

1 erg= 1 dyne x 1 cm

1 joule= 1 newton x 1 metre=105 dynes x 102 cm=107 erg

1 J = 107 erg

Therefore, 1 Joule is equal to 107 erg.

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