The two strings in FIGURE P17.49 are of equal length and are being driven at equal frequencies. The linear density of the left string is 5.0 g/m. What is the linear density of the right string?
Goals • To study magnets and the forces they exert on each other • To calculate the force that a magnetic field exerts on a moving charge • To contrast magnetic field lines with electric field lines • To analyze the motion of a charged particle in a magnetic field • To see applications of magnetism in physics and chemistry • To analyze magnetic forces on current-carrying conductors • To study the behavior of current loops in a magnetic field Introduction • How does magnetic resonance imaging (MRI) allow us to see details in soft nonmagnetic tissue • How can magnetic forces, which act only on moving charges, explain the behavior of a compass needle • how magnetic fields affect charges. Magnetic poles Forces b