A 2-ft long split spoon sampler was hammered into the ground using a 140 lb hammer with a drop height of 30 inches for the purpose of the SPT test and sampling. The recorded blow counts per 6 inches from a depth of 10-12 feet were 15-18-11-16. What is the (uncorrected) N-value from this data? a. 29 blows/ft
b. 60 blows/ft
c. 27 blows/ft
d. 33 blows/ft

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

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.