Question

I need all of the answers

The charge of sphere 2 is twice that of sphere 1. If F is the force of sphere 1 on sphere 2 with a separation of r, what is the force of sphere 2 on sphere 1 if the separation is now reduced to r/4? A. F/4 B. F C. 4F D. 8F E. 16F The electric field 1.5 cm from a very small charged object points toward the object with a magnitude of 180,000 N/C. What is the charge on the object? (k = 9 times 10^9 N middot m^2/C^2) A. -4.5 nC B. +4.5 nC C.-5.0 nC D. +5.0 nC E. none of these Draw the locations of the following charges and the electric field for extra credit Four equal negative point charges are located at the corners of a square, their positions in the xy-plane being (1, 1), (-1, 1), (-1, -1), (1, -1). The electric field on the y-axis at (0, -1) points in the same direction as: A. hat j. B. hat i. C. hat -i. D. hat k. E. hat -j. What is the minimum magnitude of an electric field that balances the weight of a plastic sphere of mass 100 g that has been charged to -5.0 mu C? A. 6.4 times 10^6 N/C B. 4.5 times 10^6 N/C C. 2.0 times 10^6 N/C D. 2.1 times 10^7 N/C E. none of these If the electric field is zero everywhere inside a region of space, the potential must also be zero in that region. A. True B. False C. Need more information If the electrical potential in a region is constant, the electric field must be zero everywhere in that region. A. True B. False C. Need more information A negative charge, if free, will tend to move A. in the direction of the electric field. B. away from infinity C. toward infinity. D. from high potential to low potential.. E. from low potential to high potential. If the electric potential in a region is given by V(x) = 6/x^3, the x component of the electric field in this region is A. 18x^-4. B. -12x^-3. C. 12x^-3. D. 12x. E. 18x.

Answer 1

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