Nicki rides her bike at a constant speed for 6 km. that part of her ride takes her 1 h. she then rides her bike at a constant speed for another 9 km. that part of her trip takes her 2 h. what is her average speed?

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of