For flow over a plate, the variation of velocity with vertical distance y from the plate is given as u (y) = ay - by2 where a and b are constants. Choose the correct relation for the wall shear stress in terms of a, b, and μ.

The interactions between a closed system and its surroundings include energy transfer by heat, boundary work and flow work. a) True b) False

Which of the following causes an engine to run too cool? A. Blown head gasket B. Inoperative cooling fan C. Thermostat that is stuck closed D. None of the above

In fully-developed laminar pipe flow, consider the rate of work done on an annulus of thickness dr (hint: consider, for each face of the annulus, rate of work = power = force * velocity).

When a group of engineers conduct a trial launch of a new rocket, the rocket explodes on the launchpad. What should the engineers do next? O A. Add a new functionality to the rocket, such as a GPS tracking system. O B.

How many power station do we have

This color curb is where parking is permitted for a limited time. The time constraints for that park will either be painted on the curb or on a sign next to the curb. Green Yellow Red White

A laboratory furnace wall is constructed of 0.2 m thick fireclay brick having a thermal conductivity of 1.82 W/m-K. The wall is covered on the outer surface with insulation of thermal conductivity of 0.095 W/m-K.

Write a program to calculate the area of circle, rectangle using a class. The program would prompt a user to select (1) circle or (2) rectangle followed by asking the necessary dimensions.

Steam enters a turbine at 120 bar, 508oC. At the exit, the pressure and quality are 50 kPa and 0.912, respectively. Determine the power (kW) produced by the turbine if the mass flow rate is 1.31 kg/s and the heat loss from the turbine is 225 kW.

What are the de Broglie frequencies and wavelengths of (a) an electron accelerated to 50 eV (b) a proton accelerated to 100 eV