Two girls are balanced on a seesaw. If the girl on the left weighs 85 lb and is sitting 4.50 ft away from the fulcrum and the girl on the right weighs 95 lb, how far from the fulcrum should the girl on the right sit? Remeber: F1d1 = F2d2

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.