Provide a physical interpretation for the following term taken from the CV form of conservation of mass: Σi mia. time rate of change of mass contained within the control volume at time t ALSO rate of accumulation of mass in the CV b. time rate of change of mass outside the control volume ALSO rate of depletion of mass in the CV c. time rate of flow of mass INTO the CV ALSO flux of mass INTO the CV d. time rate of flow of mass OUT of the CV ALSO flux of mass OUT of the CV

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k