Lucy and her friend are working at an assembly plant making wooden toy giraffes. At the end of
the line, the giraffes go horizontally off the edge of
a conveyor belt and fall into a box below. If the box
is 0.60 m below the level of the conveyor belt and
0.40 m away from it, what must be the horizontal
velocity of giraffes as they leave the conveyor belt?

Aplanet of mass m 6.75 x 1024 kg is orbiting in a circular path a star of mass m 2.75 x 1029 kg. the radius of the orbit is r 8.05 x107 km. what is the orbital period (in earth days) of the planet tplanet?

You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching each other. when you increase the plate separation, what happens to the following quantities?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.