G Which of the following is true about magnetic field lines? A. All magnetic field lines are always parallel to the Earth’s magnetic field. B. Magnetic field lines form closed loops and never intersect. C. Magnetic field lines flow out of the south pole of a bar magnet, around, and into the north pole. D. Positive charges always feel a force along magnetic field line

Why is alchemy not considered to be a science ?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

How can you increase the strength of an electromagnet?