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 3.25 ⋅ 103 seconds? (5 points) 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 ⋅ 103 mm? Justify your answer. (5 points)

Step-by-step explanation:

Given that :

Radiant energy produced per second = 3.9 * 10^33 ergs

Amount of radiant energy produced in (t) = 3.25 * 10^3 s

Radiant energy per second * time

(3.9 * 10^33) * (3.25 * 10^3)

12.675 * 10^(33 + 3)

12.675 * 10^36 ergs

= 1.2675 * 10^37 ergs

Reasonable distance for measuring tracks on a railroad:

1.435 ⋅ 10−3 mm or 1.435 ⋅ 103 mm?

1.435 × 10^-3 mm = 0.001435 mm

1.435 × 10^3 mm = 1435mm

1.435 × 10^3 mm seems more reasonable

idk

Step-by-step explanation:

honest i really dont

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: