Drove to school and and left electrons behind me. When i got there i had acquire

Question

Drove to school and and left electrons behind me. When i got there i had acquired a net charge of 2.0C. A water tower was struck with lightning and it was not grounded and it gained 1 mol of electrons as a result. The car is parked 100m from the center of the base of the tower. The spherical tank is metal and has a radius of 10m. How many C of charge does tower have? (9.65x10^4)

A. I drive a awesome new dodge charger that weighs 3000LB. How do I find how much force is needed from the electric field to get pulled off the ground toward the Tower. (Tower used in previous question, and found electric field to be 1.43 x 10^11 N/C, Charge of tower is 9.65 x 10^4, Tower is 100m away from car with a radius of 10m)

B. What is the difference in potential energy of my car where it is parked versus at the edge of the tower? (You can neglect grav)

C. What is the acceleration of my car?

Explanation / Answer

A)

1 LB = 0.453592 Kg

==> m = 3000 LB = 3000 * 0.453592 = 1360.776 Kg

==> F = m g = 1360.776 * 9.8 = 13336 N

----------------------------------------------

B)

dU = k q1 q2/r1 - k q1 q2/r2

==> dU = 9e9*(2)*(9.65e4)/10 - 9e9*(2)*(9.65e4)/100

==> dU = 1.56 x 10^14 J

-------------------------------------------------

C)

a = F/m = q E/m = 2*(1.43e11)/1360.776 = 2.10 x 10^8 m/s2

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.