The column is constructed from high-strength concrete and eight a992 steel reinforcing bars. if the column is subjected to an axial force of 200 kip: a) determine the average normal stress in the concrete and in each bar. each bar has a diameter of 1 in. b) determine the required diameter of each bar so that 60% of the axial force is carried by concrete.

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

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.