Penny is pushing a piston in a simple hydraulic system. Pauly is pushing on the other piston just hard enough to keep it from moving. If Penny's piston is wider than Pauly's, who is pushing with greater force?
A.
There is not enough information.
B.
Pauly is exerting the greater force.
C.
They are both using equal force.
D.
Penny is exerting the greater force.

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)