Asoil sample is collected and taken to the lab. the volume of the sample is 75 cm3. at the natural-water content, the sample weighs 168.00g. it is then saturated with water and reweighed. the saturated weight is 171.25g. the sample is gravity drained, and its weight is found to be 160.59g. finally, it is oven-dried; the dry weight is 157.22g. assume the density of water is 1.0g/cm3 and the density of the soil grains is 2.65g/cm3. find each of the following:

a. volumetric water content
b. gravimetric water content
c. saturation ratio
d. porosity
e. specific yield
f. specific retention
g. dry bulk density
h. porosity computed from density

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?