Class Management | Help Chapter 11: Magnetic Fields and Forces Begin Date: 6/7/2022 12:01:00 AM -- Due Date: 7/17/2022 11:59:00 PM End Date: 8/7/2022 11:59:00 PM (4%) Problem 3: A rod of m = 1.4 kg rests on two parallel rails that are L = 0.45 m apart. The rod carries a current going between the rails (bottom to top in the figure, into the page) with a magnitude B I= 1.5 A. A uniform magnetic field of magnitude B = 0.55 T pointing upward is applied to the region, as shown in the figure. The rod moves a distance d= 0.85 m along the rails in a given time period. Ignore the friction on the rails. L Otheexpertta.com A 14% Part (a) Express the magnitude of the magnetic force F on the rod, in terms of the length L, current /, and magnetic field B. A 14% Part (b) Calculate the numerical value of F, in newtons. A 14% Part (c) Which direction does the rod move? A 14% Part (d) Determine the work done on the rod during its motion, in terms of the magnetic force F and the distance traveled d. 14% Part (e) Calculate the work done on the rod, in joules. A 14% Part (f) Express the final speed of the rod, v, in terms of F, d, and m, if it started from rest. DA 14% Part (g) Calculate the numerical value of v, in meters per second.(4%) Problem 2: A wire of length L = 0.45 m and mass m = 0.015 kg carries a current of I = 0.25 A. The wire is floating at rest in a magnetic field as shown in the figure. B X X X X X X X Randomized Variables L = 0.45 m X X X X X X X m = 0.015 kg I= 0.25 A X X X X X X XXXXXXX Otheexpertta.com 25% Part (a) What are the forces acting on the wire, and which directions do they go? Gravity, downward. Magnetic force, upward.