The sun generates about 4*10^26 joules of energy every second. There are about 3.15*10^7 seconds in a year. About how many joules of energy does the sun generate in a year? Write the answer in scientific notation. Express the answer to the exact decimal place.
The total amount of energy generated by the sun in a year can be calculated by multiplying the energy generated per second by the number of seconds in a year:
(4 * 10^26 joules/second) * (3.15 * 10^7 seconds/year) = 1.26 * 10^34 joules/year
Therefore, the sun generates approximately 1.26 x 10^34 joules of energy in a year.