Question

Use the formula to approximate the speed of light, given that the energy contained in a 1kg object is 9 X 10^16 J

Answer 1

`c = 3* 10^(8)\ m/s`

Explanation:

According to the theory of mass-energy equivalence:-

`Energy=mass* c^2`

Where, c is the speed of the light

Given that, Mass = 1 kg

Energy =
`9* 10^(16)\ J`

So, applying in the above equation as:-

`Energy=mass* c^2`

`9* 10^(16)\ J=1\ kg* c^2`

Solving, we get that:-

`c = 3* 10^(8)\ m/s`