1. [/2 Points] DETAILS SERCP11 16.1.P.007.MI. MY NOTES I I ASK YOUR TEACHER Oppositely charged parallel plates are separated by 3.83 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric eld between the plates? N/C (b) What is the magnitude of the force on an electron between the plates? N (c) How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.96 mm from the positive plate? J 2. [I2 Points] ASK YOUR TEACHER An insulating rod having linear charge density 1. = 38.0 pC/m and linear mass density y = 0.100 kg/m is released from rest in a uniform electric field E = 85 V/m directed perpendicular to the rod. + + + + a a E E Lu (9 (3) Determine the speed of the rod after it has traveled 2.50 m. m/s (b) How does your answer to part (a) change if the electric field is not perpendicular to the red? It increases It decreases. It stays the same. 3. [-12 Points] SERCP11 16.A.P.064. ASK YOUR TEACHER Two charges of q1 = 1.7 uC and '72 = 2.4 uC are d = 0.60 m apart at two vertices of an equilateral triangle as in the gure below. P d 1/ d j 'I. (I: (D (a) What is the electric potential due to the 1.7-uC charge at the third vertex, point P? V (b) What is the electric potential due to the 2.4~uC charge at P? V (c) Find the total electric potential at P. V (d) What is the work required to move a 3.2-uC charge from infinity to P? J 4. [-/2 Points] SERCP11 16.1.P.010.MI. ASK YOUR TEACHER On planet Tehar, the free-fall acceleration is the same as that on Earth, but there is also a strong downward electric field that is uniform close to the planet's surface. A 1.50-kg ball having a charge of 5.26 MC is thrown upward at a speed of 20.1 m/s. It hits the ground after an interval of 4.10 5. What is the potential difference between the starting point and the top point of the trajectory? (Use 9.8 m/s2 for the acceleration due to gravity.) kV 5. [-I2 Points] SERCP11 16.2.P.015.M|. ASK YOUR TEACHER Two point charges Q1 = +4.10 nC and Q2 = 2.70 nC are separated by 45.0 cm. (a) What is the electric potential at a point midway between the charges? V (b) What is the potential energy of the pair of charges? J What is the significance of the algebraic sign of your answer? Positive work must be done to separate the charges. Negative work must be done to separate the charges