The assembly starts from rest and reaches an angular speed of 137 rev/min under the action of a 31-N force T applied to the string for t seconds. Determine t. Neglect friction and all masses except those of the four 3.9-kg spheres, which may be treated as particles.

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

If a sphere and a cure have the same mass and are propelled up a ramp with the same force, which would travel father up the ramp? explain.