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I have 3 questions, please show work so I can learn how to do the problems on my own.

1. An electric field E in N/C, right causes the m in grams ball in the figure to hang at a T degree angle. What is the charge on the ball in nanoCoulombs?

2. What is the magnetic flux through the loop shown in the figure? B=5.49 T, G=1.73 T and L=46.62 cm.

3. A straight wire carrying a current of 40.27 A lies along the axis of a 9.34 cm-diameter solenoid. The solenoid is 0.68 m long and has 221.06 turns carrying a current of 6.18 A. What is the magnitude of the magnetic field, in mT, 1.82 cm from the wire?

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