describe an experiment that you could do to show how charged objects can affect other objects without touching them.
use the phrase electric field correctly in your post.
describe one way in which the electric field of a charge is similar to the magnetic field of a bar magnet.
explain how you can remember this property of electric and magnetic fields.

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Which accurately compares concave and convex lenses?