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3 q + b/7 , when q = 1 and b = 10

charge q and Q are placed on the x-axis at x=0 and x = 2.0 meters.,respectively.
if q= -40 pC and Q= +30 pC, determine the net flux through aspherical surface (radius = 1.0 meters) centered on theorigin.

Please Help,

Thank you!

6. For the following circuit.

Write down the node voltage equations that solve for it when: The system frequency is 1 kHz. II = 2.5<0 A and I 2=1<0 A (<= angle) (2 pts)