Cho điểm A có tọa độ X A; Y A; Z A; H overline a y vẽ đổ thức điểm A và xét xem điểm A thuộc góc phần tâm nào ? P. An 1 1 -2 2 2 -4 -2 3 3 -6 3 4 4 -2 -2 5 5 -5 10 6 -1 7 -2 -4 4 8 -3 -3 6 9 -4 2 -8 10 -5 Toa d hat 0; X A; T A; Z A -10

What precautions should you take to prevent injuries when dealing with heavy loads?

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.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.