Two bars,A and B,each of length 2.0 m and cross sectional area 1.0 m²,are placed end to end as shown in the figure.
The thermal conductivities of the bars are
k A = 439 J/(s × m × K)and k B = 887 J/(s × m × K),respectively.The left end of bar A is maintained at 373 K while the right end of B is maintained at 273 K.
-What is the rate of heat transfer through this combination?
A)3.7 × 10³ J/s
B)6.4 × 10³ J/s
C)8.8 × 10³ J/s
D)1.5 × 10⁴ J/s
E)2.2 × 10⁴ J/s

Question

Two bars,A and B,each of length 2.0 m and cross sectional area 1.0 m²,are placed end to end as shown in the figure.
 The thermal conductivities of the bars are
k A = 439 J/(s × m × K)and k B = 887 J/(s × m × K),respectively.The left end of bar A is maintained at 373 K while the right end of B is maintained at 273 K.
-What is the rate of heat transfer through this combination?
A)3.7 × 10³ J/s 
B)6.4 × 10³ J/s 
C)8.8 × 10³ J/s 
D)1.5 × 10⁴ J/s 
E)2.2 × 10⁴ J/s

Quizplus · Accepted Answer

The Answer of Two bars,A and B,each of length 2.0 m and cross sectional area 1.0 m²,are placed end to end as shown in the figure.
 The thermal conductivities of the bars are
k A = 439 J/(s × m × K)and k B = 887 J/(s × m × K),respectively.The left end of bar A is maintained at 373 K while the right end of B is maintained at 273 K.
-What is the rate of heat transfer through this combination?
A)3.7 × 10³ J/s 
B)6.4 × 10³ J/s 
C)8.8 × 10³ J/s 
D)1.5 × 10⁴ J/s 
E)2.2 × 10⁴ J/s

Two Bars,A and B,each of Length 2