A spherical conductor of radius r1 is given charge q. A second, neutral spherical conductor of radius r2 is connected to the first by a long thin straight conducting wire of length much more than r1 or r2. After the connection, how does the electric potential on sphere 1 compare to that on sphere 2

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

When an object is heated it contracts. a. true b. false