(a) A dc power line for a light-rail system carries 1000 A at an angle of 30.0° to Earth's 5.0 × 10-5t field. What is the force on a 100-m section of this line? (b) Discuss practical concerns this presents, if any.

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(a) A dc power line for a light-rail system carries 1000
A at an angle of 30.0° to Earth's 5.0x 10-5T field. What
is the force on a 100-m section of this line? (b) Discuss
practical concerns this presents, if any.
Transcribed Image Text:(a) A dc power line for a light-rail system carries 1000 A at an angle of 30.0° to Earth's 5.0x 10-5T field. What is the force on a 100-m section of this line? (b) Discuss practical concerns this presents, if any.
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