Following are the results from the liquid and plastic limit tests for a soil. Liquid limit test: Number of blows, N 15 Moisture content (%) 42 20 40.8 28 39.1 Plastic limit test: PL = 18.7% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil?

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

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

Apiping systems consists of 6 m of 6-std type k and 12 m of 4-std type k, both drawn copper tubing. the system conveys ethylene glycol at a rate of 0.013 m3/s. the pressure drop across the system is to be calculated. there are two 90° elbows in the 6-in pipe, a reduction from the 6-in pipe to the 4-in pipe and four 90° elbows in the 4-in pipe. all fittings are soldered (same as flanged) and regular. the inlet and outlet of the system are at the same height.