Which of the following is true of compasses ? A. compass magnets can be deflected by Earth's magnetic field or other permanent magnets .
B. compasses detect fluctuations in convection in the mantle.
C. compasses always point toward geographic north.
D. compass magnets can only be deflected by electromagnets such as Earth's magnetic field.​

Difference between series and parallel circuits

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?