Question

convert an energy of one erg to joule​

Answer 1

Answer:

Joule : SI system, erg:CGS system

Work = Force x Distance = Mass x Acceleration x Length = Mass x

(Time)

2

Length

×Length

Dimensions of work = [W]=[M

1

L

2

T

−2

]

∴a=1,b=2,c=−2.

Now

SI system CGS system

M

1

=1kg M

2

=1kg

L

1

=1m L

2

=1cm

T

1

=1s T

2

=1s

Here N

1

=1,N

2

=?

∴UsingN

2

=N

1

[

M

2

M

1

]

a

[

L

2

L

1

]

b

[

T

2

T

1

]

c

=1[

1g

1kg

]

1

[

1cm

1m

]

2

[

1s

1s

]

−2

=1[

1g

1000g

]

1

[

1cm

100cm

]

2

=10

7

∴N

2

=10

7

So 1J=10

7

erg

Answer 2

1 joule = 100,00,000 erg......

so,

1 erg = 1/ 100,00,000 joule.