A12 kg object undergoes circular motion with a radius of 4 m and a speed of 18 m/s.
what is the centripetal acceleration of the object?

Which of the following quantities are units of momentum? (there could be more than one correct choice.) a)n m b) kg s/m c) kg m/'s d)n-s 12 points] e) kg m2/s2

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

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?