If there is to be no relative motion between the train and the edge of the platform, how fast must the train move compared to the rim speed of the rotating platform

an energy transformation flow diagram is shown

where is it ?

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular