80. Two metal rods, 1 & 2 of same length have same 8 temperature difference between their ends, their
thermal conductivities are K, & K, and cross
sectional areas A, & A, respectively. What is
required condition for same rate of heat conduction
in them.
(1) K1= K2
(2) K1 A, - K2 A,
(3) K1/A1=K2/A2
(4)K1/l1^2=K2/l2^2
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the first one

step-by-step explanation:

just id the test.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft

      2

  2 is to go somewhat to the top right of a because it is squared    

v= a h/3