Answer to Question #264617 in Physics for jay

Question

An aluminium bar of length 45.0 cm and a steel bar of length 60.0 cm and same cross-

section area are joined thermally end-to-end (see diagram below). The aluminium end is kept at

350 0 C and the steel end at 80.0 0 C. [k aluminium = 200 W/m K, k steel = 40 W/mK]

Aluminium Steel

350 0 C 80.0 0 C

T jxn = ?

Q6 cont’d.

a) Find the temperature where the 2 metals are joined. (Use example given in class)

b) Draw a graph of temperature versus length, x, for the compound bar.

Answer 1

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