40 points if you answer! a neutral atom has an atomic number of 20 and a mass number of 42. how many electrons does the atom have? question 4 options: 20 22 42 62

When does your body conduct current more readily?

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

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat