Question

Can someone help me please???

Brainlyest if you can help me lol.
No links please

Part A: The sun produces 3.9 • 1033 ergs of radiant energy per second. How many ergs of radiant energy does the sun produce in 2.45 • 105 seconds? (5 points)


Part B: Which is the more reasonable measurement of the distance between the tracks on a DVD:


7.4 • 10–4 mm or 7.4 • 104 mm? Justify your answer. (5 points)

Answer 1

#A

• Produces per second:-=3.9×10^33ergs

Produced energy

$\\ \rm\Rrightarrow 3.9(10^33)(2.45)(10^5)=9.56(10^38) ergs$

#B

7.4×10^4mm

shorter is more preferable