In a compression test of a standard 2 by 2 by 8-in. douglas-fir specimen, the test data were as follows: load, lb. 0 | 5,000 | 10,000 | 15,000 | 20,000 | 25,000 | 30,000dial reading in 0.000 | 0.0085 | 0.0155 | 0.0225 | 0.0295 | 0.0365 | 0.0485the extensometer had a gage length of 6 in. and a multiplying factor of 2.compute the modulus of elasticity and the stress at the proportional limit. (5 points)

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.

Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k