Question

plz keep in mind sig figures and make units clear :)

Part A Screen Shot 2020-07...6.32 PM In (Figure 1), the rod moves with a speed of 1.3 m/s on rails 25.0 cm apart. The rod has a resistance of 2.2 12. The magnetic field is 0.35 T, and the resistance of the U-shaped conductor is 27.0 2 at a given instant. Calculate the induced emf. Express your answer to two significant figures and include the appropriate units. ЦА ? Screen Shot 2020-07...6.38 PM E = Value Units A Submit Request Answer Figure 1 of 1 Part B Calculate the current in the U-shaped conductor. Express your answer to two significant figures and include the appropriate units. O o Screen Shot 2020-07-31 at 12.16.38 PM ? O μΑ O G Search 0 0 I = 010 0 0 Value Units Part C O 0 0 0 dA Submit lo Request Answer o Calculate the external force needed to keep the rod's velocity constant at that instant. Express your answer to two significant figures and include the appropriate units. อ Om B (outward) v dt Part C UA ? F = Value Units Submit Request Answer

Answer 1

given the speed of rod = 1.3 m/s distance between rols = 25x10 mm desistance - 2.21 maqnenc field B = 0351 as induced Emot { = dCRA) Blv dt 0:35 x 025X13 O:11375V 0:۱۱۷ 6) current m u-shaped conductos i { R 0:11 -0.003895A (9742:2) 1 -0.0044 c) force needed to keep the rood's velocity constant is FEBIL <0.35 0.003895% 0.25 f = 0.00034 N