What is the effect of putting a ferromagnetic material inside the coil of a solenoid? It weakens the magnetic field.

It strengthens the magnetic field.

It turns off the magnetic field.

It changes the flow of the current.

Under normal temperature and pressure conditions, what type of rock could be formed from weathering in erosion of metamorphic rock

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.