A 2.60 N metal bar, 0.850 m long and having a resistance of 10.0 N, rests horizontally on conducting wires connecting it to the circuit shown in (Figure 1). The bar is in a uniform, horizontal, 1.60 T magnetic field and is not attached to the wires in the circuit. Part A What is the acceleration of the bar just after the switch S is closed? Express your answer with the appropriate units. HÀ ? Value Units a = Submit Request Answer < Return to Assignment Provide Feedback Figure 1 of 1 25.0 N xS x 10.0 N: X. 120.0 V

An electron moves at right angles to a magnetic field of 0.23 T. Part A What is its speed if the force exerted on it is 9.1x10-15 N? Express your answer using two significant figures. IVO ADC ? v = m/s

Please help.

The long, thin wire shown in the figure (Figure 1) is in a region of constant magnetic field B. The wire carries a current of 6.2 A and is oriented at an angle of 7.5° to the direction of the magnetic field. Part A If the magnetic force exerted on this wire per meter is 3.5×10-2 N, what is the magnitude of the magnetic field? Express your answer using two significant figures. VE ΑΣΦΑΙΡΟ B = 40 Submit Part B X Incorrect; Try Again; 29 attempts remaining Previous Answers Request Answer 0 = 3.7 Submit ? At what angle will the force exerted on the wire per meter be equal to 1.6×10-² N ? Express your answer using two significant figures. 197| ΑΣΦΑ Previous Answers Request Answer ? mT X Incorrect; Try Again; 29 attempts remaining