Write down the applicable formulas and show numeric substitutions on the provided paper. Calculate the numeric answer and indicate its units. Assume that all given facts contain three significant figures. Write your answers on supplied paper, not on test sheet. (k=9x109Nm?/C2, EQ=8.85x10-12 C2/(Nm?), qe=-1.6x10-19 C, me=9.11x10-31 kg) (Grade based on best 5 out of 6 answers) 1. A hollow copper sphere with a 6-cm outer radius and a 4-cm inner radius has a total charge of 6- DC.(A 3-nC charge is placed at the center of the sphere. A) Find the charge on the inner surface of the copper B) Find the electric field at locations r= 5-cm and r= 8-cm inner Surface = 0 c 2. A sheet of glass has 10-cm length and 30-cm width. The electric field in the glass is 6x106 N/C. If an angle of 450 exists between the electric field and the normal to the surface area, what is the electric flux in the glass? (Assume the dielectric constant is 1) 3. A uniform electric field exists between two parallel plates separated by 2 cm. An electron is 1 = Ed released from rest at the surface of the negatively charged plate and hits the other plate in 4x10-8 s. What is the magnitude of the electric field? 4. An electron is repelled by -200 V. What is the final velocity of the electron? - my = k 5 . A 5 nc charge is located at x=1 m and a -10 nC charge is located at x=8 m. If the -10 nC charge is held stationary, and the 5 nC charge starts from rest, calculate the velocity of the 5 nC charge when it passes x=6 m. (Hint: you will need to use conservation of energy) ry 6. A charge q1=3 JC is located at coordinates (1 cm, 2 cm) and a charge q2=-5 JC is located at coordinates (4 cm, 5 cm). Find the voltage at coordinates (3 cm, 3 cm). V= Ed