PLEASE HELP

Find 3 possible two-port characteristics of the two-port indicated by the dashed line. (Prefer characteristics of R, H, A .)

Thanks in advance!

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

Fluids at rest possess no flow energy. a)- true b)- false

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.