Complete the sentence. because the marginal social benefit from healthcare the marginal benefit perceived by its consumers, a competitive market in healthcare would it. a. exceeds; overprovide b. exceeds; underprovide c. is less than; underprovide d. is less than; overprovide

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.