Air flows at 45m/s through a right angle pipe bend with a constant diameter of 2cm. what is the overall force required to keep the pipe bend in place? is it: a) 0.76 n b) 1.08 n c) 1.52 n d) 0.25 n e) 2.56 n

Apiping systems consists of 6 m of 6-std type k and 12 m of 4-std type k, both drawn copper tubing. the system conveys ethylene glycol at a rate of 0.013 m3/s. the pressure drop across the system is to be calculated. there are two 90° elbows in the 6-in pipe, a reduction from the 6-in pipe to the 4-in pipe and four 90° elbows in the 4-in pipe. all fittings are soldered (same as flanged) and regular. the inlet and outlet of the system are at the same height.