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.

Answer if your name is russ

A tungsten matrix with 20% porosity is infiltrated with silver. Assuming that the pores are interconnected, what is the density of the composite before and after infiltration with silver? The density of pure tungsten is 19.

La teoría de la evolución

What is the major drawback in nanocrystalline alloys? a) - high brittleness b) - low hardness c) - rapid grain growth upon heating d) - low thermal conductivity

What material property or properties are responsible for magnetic domains?

There are six items to be rung up in the cash register. The first item costs $15.00. Each item after that costs an additional $2.00. (item #2 costs $17, item #3 costs $19, etc.

List and briefly describe two modern's materials needs

Write the definition of a method named add that receives a reference to a Scanner object associated with a stream of input consisting of integers only. The method reads all the integers remaining to be read from the stream and returns their sum.

How are fluids distributed and transported in a fluid power system?

The sliders A and B are connected by a light rigid bar of length l = 20 in. and move with negligible friction in the slots, both of which lie in a horizontal plane. For the position where xA = 16 in., the velocity of A is vA = 3 ft/sec to the right.