Asked by corey

1) A spherical surface completely surrounds a collection of charges. Find the electric flux through the surface if the collection consists of a single +3.93E-6 C charge.

2) A plate carries a charge of -2.52μC, while a rod carries a charge of +2.19μC. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge.

3) Two charges are placed on the x axis. One of the charges (q1 = +8.06 μC) is at x1 = +2.79 cm and the other (q2 = -21.8 μC) is at x1 = +8.94 cm. Calculate the net electric field at x = 0 cm.

4)Two tiny conducting spheres are identical and carry charges of -19.8 μC and +49.8 μC. They are separated by a distance of 2.52 cm. What is the magnitude of the force that each sphere experiences?


Can somebody please help me! i got one try on each left... they're annoying me, i know im making little mistakes.. if you want me to show work i will!. here is what i did on question 4) keep getting this answer -1.395 (which is wrong) and i used F = 8.99E9 *Q1*Q2/r²
IDK WHATS WRONG!


THANK YOU SOO MUCH TO WHO EVER ANSWERS THIS!!
Answered by bobpursley
On number 4, just looking at your answer, order of magnitude, you have to be wrong.
F=8.99E9*19.8E-6*49.8E-6/(2.52E-2)^2 which is about 10,000 times larger than your answer
Answered by bobpursley
I would suggest on the other three, do them on paper, check the orders of magnitudes, then verify it on the calc.
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