How is energy conserved in: pushing a car uphill

Determine the maximum r-value of the polar equation r =3+3 cos 0

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

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?