Which of the following was one of the first uses of the electric light bulb? as lights for Galloping Gertie
as searchlights at the New York World's Fair in 1893
O as a searchlight at the Chicago World's Fair in 1893
O as lights for the Tacoma Narrows bridge

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.

Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k