How many 100 ohm resistors (in parallel) are required to carry 4 A on 200 V line​

Asample of a gaseous substance changes into a liquid

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

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?