Water flows from a storage tank on a hill to a house 60 feet below. The city code requires a minimum pressure of 20 psi at the tap. Determine the a) velocity of the water at the tap (house) when pressure requirements are met and b) flow rate in the pipe. Neglect losses due to friction, entrance and exit, etc.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

What is a monomer? how do they form a ploymer from the view point of chemical bonding?