Study, 462 students are selected randomly from a list of all students enrolled at the college. of these, 162 admitted to having engaged in binge drinking. using the most conservative estimate, what sample size would be required to reduce the margin of error "to 2 percentage points? "

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.