1.For a ternary system, three components are present; temperature is also a variable. What is the maximum number of phases that may be present for a ternary system, assuming that pressure is held constant?
2.The motor M pulls on the cable with a force of F, which has a magnitude that varies as shown on the graph. If the 20-kg crate is originally resting on the floor such that the cable tension is zero at the instant the motor is turned on, determine the speed of the crate when t=6s. Hint : First determine the time needed to begin lifting the crate.
3.A deposit of soil is 16 m deep and overlies an impermeable stratum: the coefficient of permeability is 1 micro m/s. A sheet pile wall is driven to a depth of 12.00 m in the deposit. The difference in water level between the two sides of the piling is 4.00 m. Draw the flow net and determine the quantity of seepage under the piling.