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A 2.90-N metal bar, 1.75 m long and having a resistance of 10.0 ohms, rests horizontally on conducting
wires connecting it to the circuit shown in the figure. The bar is in a uniform, horizontal, 1.55-T
magnetic field and is not attached to the wires in the circuit.
120.0 V
25.0 £2
www
10.0 ΩΣ
S
a) What is the magnitude of the acceleration of the bar just after the switch S is closed?
b) What is the direction of the acceleration of the bar just after the switch S is closed?
Transcribed Image Text:A 2.90-N metal bar, 1.75 m long and having a resistance of 10.0 ohms, rests horizontally on conducting wires connecting it to the circuit shown in the figure. The bar is in a uniform, horizontal, 1.55-T magnetic field and is not attached to the wires in the circuit. 120.0 V 25.0 £2 www 10.0 ΩΣ S a) What is the magnitude of the acceleration of the bar just after the switch S is closed? b) What is the direction of the acceleration of the bar just after the switch S is closed?
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