A 1210 kg rollercoaster car is moving 8.31 m/s. Before entering
the station, it first rolls up a 2.26 m
hill. How fast is it moving then?

Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

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