As a nail approaches the south pole of a magnet, what happens to its magnetic domains? B. The north poles of the domains point toward the magnet.

C. The south poles of the domains point toward the magnet.
The domains spins, but end up in no particular pattern.

D. The domains remain unaffected by the magnet.

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?