An electric current of 1 a passing through a cable has a measured voltage of 30 v across the cable. the cable is covered with polyethylene insulation, and convection occurs at the outer surface of the insulation. the ambient temperature is 20°c with a convection heat transfer coefficient of 5 w/m2.k, and the surface area subjected to the convection is 0.1 m². the astm d1351 standard specifies that thermoplastic polyethylene insulation is suitable for use on electrical cable with operation at temperatures up to 75°c. under these conditions, will the polyethylene insulation for the cable meet the astm d1351 standard?