7. 2 cars are travelling the same speed on University Drive. The black one has a mass of 35 grams and the blue one has a mass of 32 grams.
Which car has more kinetic energy? Why?

Which instrument is used to measure air temperature

Explain why electric current cannot exist if a current doesn't have a voltage source.

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.