Kevin places a book on a desk. Why does the book stay still on the desk? A.
The forces acting on the book are unbalanced.

B.
The forces acting on the book are balanced.

C.
There are no downward forces on the book.

D.
There are no upward forces on the book.

Drag each item into the proper state of matter category.

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped

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?