13. A converging lens has a focal point that is 6.0 cm from its center. If an observer looks through the
lens at an object 1.5 cm from the lens, what will the image look like? Is it real or virtual? Is it upright
or inverted? Is the image magnified, reduced, or essentially the same size as the object?

Which object is most likely represented by a dot?

What happens when the number of protons in an atom changes

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?