Determine the relative amounts (in terms of volume fractions) for a 15 wt% Sn-85 wt% Pb alloy at 100°C. The densities of tin and lead at 100°C are given as follows: rhoSn = 7.29 g/cm3
rhoPb = 11.27 g/cm3
a) What phase(s) is(are) present for an alloy of this composition?
b) What are the compositions for the these two phases?c) What are the relative amounts (mass fractions) of the two phases?

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false