The total amount of energy radiated by the Sun in one day is 3.307 10³¹ J.

The power radiated by the Sun is the rate at which energy is radiated by the Sun per unit of time.

Write down a formula relating the total energy radiated by the Sun, E, during a time interval, t, and the radiated power, P.

Use your formula and the information given above to calculate the power of the Sun.

Give your answer in watts (the watt is the SI unit of power, 1 W = 1 J s^-1) to three significant figures using scientific notation.

Note: units are important in this question, so take particular care to use units consistently throughout.

ii.How much mass would need to be fully converted to energy to provide the Sun with 3.307 x 10³¹ J?

Remember that 1 J = 1 kg m² s^-2.

Give your answer to two significant figures using scientific notation.

You should take the speed of light in a vacuum to be c = 3.0 10⁸ m s^-1.