Problem two conducting rails 30cm apart rest on a 50degree, Ask an Expert

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Problem: Two conducting rails 30cm apart rest on a 5.0(degree) ramp. They are joined at the bottom by a 0.60 ohm resistor, and at the top a copper bar of mass, 0.040 kg is laid across the rails. The whole apparatus is immersed in a vertical 0.55 T field.

Part A: What is the thermal velocity of the bar as it slides frictionlessly down the rails?

I need help to determine the thermal velocity of the bar as it slides frictionlessly down the rails.

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