a crate is sliding down an inclined ramp at a constant speed of 0.55 m/s. the vector sum of all the forces acting on this crate must point:

The two metal spheres in the figure are connected by a metal wire with w switch in the middle. initially the switch is open. sphere 1, with the larger radius, i'd given a positive charge. sphere 2, with the smaller radius, is neutral. then the switch is closed. afterward, sphere 1 has charge q1, is at potential v1 and the electric field strength at its surface is e1. the values for sphere 2 are q2, v2, and e2. a. is v1 < ,> , or = to v2? explain. b. is q2 < , > , or = explain? c. is e1 < ,> ,or = to e2? explain?

In which of the following can you not find plasma

Ln finding the density of liquid why is the method of using a density bottle more accurate than the one of using a measuring cylinder