None of these questions relate to each other. PLEASE INCLUDE PROPER UNITS IN ALL OF YOUR ANSWERS FOR FULL CREDIT!!!
Your physics teacher is in a helicopter 25.0 meters above the roof of a noisy
neighbor's house. If your physics teacher drops a 1.5 kilogram water balloon from
the helicopter. What is the balloon's speed when it hits the neighbor's roof? *
Your answer

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

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.