A silicon carbide test coupon, 100 mm long (L) by 8 mm wide (b) by 6 mm high (d) is tested in a three point bend flexure test. If the specimen fails at a load of 450 N, and a part of this material with the same dimensions is used in service to support a load of 400 N, can we be confident that no failure will occur

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?