1-D, steady state, plane wall of length L=0.3m with no generation has temperature BC’s – Ts1=50°C (x=0) & Ts2=25°C (x=L). Calculate the temperature at .23m and heat flux through the wall for the following two materials (separate calculations for each): Gold and Plain Carbon Steel.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

Determine the damped natural frequencies and the steady state response of a decoupled damped forced two degrees of freedom system. 10ä1 + 2q1 20q1 10 cos t; 10q2 +4q2 + 40q2 10 cos t

Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.