### Question Description

I need an explanation for this Physics question to help me study.

## Final Answer

Thank you for the opportunity to help you with your question!

The formula to calculate the emf E induced for a rod of length L moving at speed v perpendicular to the magnetic field B is E = BLv

You would also need to use Ohm's Law, V = IR to solve this question. Please note that the emf E induced is the same as that of potential difference, V in the formula for Ohm's Law.E = BLv => IR = BLv

Hence speed v = IR/BL = (0.130 x 10.0) / (0.715 x 0.37) = 4.9 m/s (to 2 sig fig) (answer)

Please let me know if you need any clarification. I'm always happy to answer your questions.Brown University

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