[Answered] Stars A and B have the same temperature, but star A has twice the radius of star B. What is the ...

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Author Question: Stars A and B have the same temperature, but star A has twice the radius of star B. What is the ... (Read 80 times)

K@

Hero Member
Posts: 608

on: Jul 28, 2018

Stars A and B have the same temperature, but star A has twice the radius of star B. What is the ratio of star As power output to star Bs output due to electromagnetic radiation? The emissivity of both stars can be assumed to be 1.
1.4
2.8
3.16
4.64

Question 2

Two rods of the same length and diameter are made from different materials. The rods are to connect two regions of different temperature so that energy will transfer through the rods by heat. They can be connected in series, as in figure a, or in parallel, as in figure b. In which case is the rate of energy transfer by heat larger?

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Marked as best answer by a Subject Expert

cici

Sr. Member
Posts: 325

Reply #1 on: Jul 28, 2018

Answer to Question 1

1

Answer to Question 2

2

K@

Member
Posts: 608

Reply 2 on: Jul 28, 2018

Excellent

ricroger

Member
Posts: 352

Reply 3 on: Yesterday

Gracias!

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