Question

Using dimensions, show that 1 joule =10⁷ erg.

Answer 1

Yes Here it is from my LAPPY..

Not pasted

Answer 2

Hi

Good morning

...................................................

1 Joule = 10^7 erg

1 Joule = 1 Newton X 1 metre -------------(1.)

we know that, 1 Newton = 1kg X 1ms^-2

1 Newton = 10^3 X 10^2

1 Newton = 10^5 gcms^-2

now take, 1m

1m = 100cm

1m = 10^2 cm

now put the values in (1) equation


1 Joule = 10^5gcms^-2 X 10^2 cm

1 joule = 10^7 erg.

May it is helpful for you.

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