SP20-212-h07.pdf - Phys 212(SP20 Homework Set 7 Due Noon CDT Submit via Gradescope Please see course site for instructions Problem 1 An electron moves

# SP20-212-h07.pdf - Phys 212(SP20 Homework Set 7 Due Noon...

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Phys 212 (SP20) Homework Set 7 Due: March 30, 2020, Noon CDT Submit via Gradescope. Please see course site for instructions. Problem 1. An electron moves at 1.75 × 10 6 m/s through a region in which there is a magnetic field of unspecified direction and magnitude 6.70 × 10 - 2 T. (a) What are the largest and smallest possible magnitudes of the acceleration of the electron due to the magnetic field? (b) If the actual acceleration of the electron is one-fourth of the largest magnitude in part (a), what is the angle between the electron velocity and the magnetic field? Problem 2. Battery R Flexible lead A conducting wire of length 50.0 cm and of mass 12.0 grams is suspended by a pair of flexible conducting leads in a magnetic field of strength 0.490 T pointing out of the page. The resistor R is 25.0 Ω . The current in the wire is such that the tension in the flexible leads is zero. (The battery and the resistor are held fixed by supports not shown in the figure.) (a) What is the voltage of the battery?