According to its periodic table entry, how many electrons does nitrogen have in its valence level? 2 5 7 14

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?