Question

How to shows 1joule =10 7erg

Answer 1

$\huge\boxed{\texttt{\fcolorbox{Red}{aqua} {HEY MATE....!!}}}$

$\underline\bold\red{\huge{ANSWER : }}$

⭐ In SI System, the absolute unit of work is Joule.
⭐ In CGS System, the absolute unit of work is erg.
⭐ We know, 1 Joule = 1 Newton × 1 Metre
=> 1 J = 1 N × 1 m
=> 1 J = ${10}^{5} dyne\times {10}^{2} \ \: cm$
=> 1 J = ${10}^{7} erg.$

⭐ THUS, THE ABOVE EXPRESSION IS DERIVED.

✨✨✨✨ ALWAYS BE BRAINLY ✨✨✨✨

Answer 2

We know, 1 Joule = 1 Newton × 1 Metre

=> 1 J = 1 N × 1 m

=> 1 J = 10^5 dyne × 10^2 cm

=> 1 J = 10^7 erg.


Thus we get, 1 joule = 10^7 erg.