the dthe decay constant of a radioactive substance is 3.75*10 -3 y-1, Determine its half-life. ecay constant of a radioactive substance is 3.75*10 -3 y-1, Determine its half-life.

What precautions should you take to prevent injuries when dealing with heavy loads?

The higher the astm grain-size number, the coarser the grain is. 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.