A water pump takes through 12m. water is discharged at a surface at a rate of 2.0kg/s and the discharge speed of each drop os 3.0m/s. Find the minimum power of the pump.

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Which type of basaltic lava flow has a fairly smooth

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.