(a) Determine the horizontal component of the earth's magnetic field at the location. (b) The current in the coil is reversed, and the coil is rotated about its vertical axis by an angle of90∘in the anticlockwise sense looking from above. Predict the direction of the needle. Take the...
Why does an angle move with the Earth's magnetic field? Why is the light inside a rainbow brighter than on the outside? Why is the color of the sky is blue? Why is water transparent? Why do the plasma and dust tails usually point in different directions? Why do we not put door han...