Daisy received a class assignment for writing statements in first-order logic form. What option should Daisy use to represent the sentence “All birds can sing” in first-order logic? (This is a test question on Plato's 'AI" Artificial Intellengence course)

A. ⱯSb

B. bⱯS

C. ⱯbS

D. BⱯs

E. ⱯSB

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

The air in an automobile tire with a volume of 0.015 m3 is at 32°c and 140 kpa gage. determine the amount of air that must be added to raise the pressure to the recommended value of 206 kpa gage. assume the atmospheric pressure to be 128 kpa and the temperature and the volume to remain constant.[r-0.287 kj/kgk]

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?