An acrobat was launched toward a water tank, with an upward velocity of 48feet per second. the launch point was 32 feet below the water level in the tank. use the quadratic équation 0=16t^+48t-32 to find how much time, t, it took for her to reach the water level in the tank.

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

The two required components for a generator are

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?