Solution Found!
(a) How much power is radiated by a tungsten sphere (emissivity e = 0.35) of radius 22
Chapter 14, Problem 35P(choose chapter or problem)
Problem 35P
(a) How much power is radiated by a tungsten sphere (emissivity e = 0.35) of radius 22 cm at a temperature of 25°C? (b) If the sphere is enclosed in a room whose walls are kept at -5°C, what is the net flow rate of energy out of the sphere?
Questions & Answers
QUESTION:
Problem 35P
(a) How much power is radiated by a tungsten sphere (emissivity e = 0.35) of radius 22 cm at a temperature of 25°C? (b) If the sphere is enclosed in a room whose walls are kept at -5°C, what is the net flow rate of energy out of the sphere?
ANSWER:
Solution 35P
Step 1 of 4
(a)
Here we have to calculate the power radiated by tungsten sphere.
Given data,
Emissivity,
Radius of sphere,
Temperature,
Using
Stefan’s Constant,
To find,
- Power radiated,