× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
New Topic  
ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3561
12 years ago
Two objects are placed in a room with a temperature of 20°C. Object A has a temperature of 70°C, while object B has a temperature of 140°C. They have the same emissivity, but different areas. What should the ratio of the area of object A to that of object B be if the net power emitted by both objects is the same?
A) 2.0
B) 3.4
C) 5.2
D) 17
E) 21
Read 1173 times
1 Reply

Related Topics

Replies
wrote...
Educator
12 years ago
B
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1239 People Browsing
Related Images
  
 2946
  
 117
  
 227
Your Opinion
Do you believe in global warming?
Votes: 370