Question

PLZZZ HELP WILL GIVE BRAINLEST
Part A: The sun produces 3.9 ⋅ 10^33 ergs of radiant energy per second. How many ergs of radiant energy does the sun produce in 3.25 ⋅ 10^3 seconds?

Part B: Which is the more reasonable measurement of the distance between the tracks on a railroad:
1.435 ⋅ 10^−3 mm or 1.435 ⋅ 10^3 mm? Justify your answer.

Answer 1

part A:
= 3.9* 3.25 * 10 ^36
12.675 * 10^36


PART B:1.435 . 10 ^3 mm

Answer 2

Answer:

$\text{Part A. }1.2675\times 10^{37}\text{ergs of radiant energy}\\\text{Part B. }1.435\times 10^3 mm$

Step-by-step explanation:

Part A.

$\text{ergs of radiant energy produced in one second = }3.9\times 10^{33}\\\text{ergs of radiant energy produced in }3.25\times 10^3\text{ seconds = }3.9\times 10^{33}\times 3.25\times 10^3\\=1.2675\times 10^{37}\text{ergs of radiant energy}$

Part B.

$\text{Part B. }1.435\times 10^3 mm$

is the more reasonable measurement of the  distance between the tracks on a railroad because $1.435\times 10^{-3}\thinspace mm$ means 0.001435 mm and so it is a very small value and cannot logically be the distance between the tracks on a railroad.