Ahydraulic cylinder is to compress a car body down to bale size in 30 sec. the operation requires a 25 ft stroke and a 9500-lb force. if a 3000 psi pump has been selected and assuming the cylinder is 98% efficient find:

a) the required piston area in ft^2.

b)the required piston area in m^2.

c)the necessary pump flow rate.

d)the hydraulic horsepower delivered to the cylinder.

e)the output horsepower delivered by the cylinder to the load.

In what direction does the medium move relative to the direction of the wave? explain.

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.