1) A system of (1.480x10^3) particles, each of which is either an electron or a proton, has a net charge of -(4.72x10^-17) C. How many electrons are in this system?

Note: Your answer is assumed to be reduced to the highest power possible.

2) A 5.73 C charge experiences a 0.592 N force in the positive y direction. If this charge is replaced with a -2.92 C charge, what force (in newtons) will it experience?

Use a positive answer to indicate an upward force and a negative answer to indicate a downward force.

3) A proton is released from rest in a uniform electric field of magnitude (2.13x10^5) N/C. Find the speed (in m/s) of the proton after it has traveled (8.420x10^-2) m.

Note: Your answer is assumed to be reduced to the highest power possible.

4) A charge ofq = +7.02 ?C is located in an electric field. The xandycomponents of the electric field areE_x = 6400 N/C and E_y = 7080 N/C, respectively. What is the magnitude of the force (in newtons) on the charge?

The electric field lines surrounding three charges are shown. The center charge is 92 = -20. 0 AC. E field lines Question 3 (1 point) What is the sign of charge q1? O positive O negative Question 4 (1 point) What is the sign of charge 93? O positive O negative Question 5 (1 point) Find charge 93. -40 HC O-20 HC O-10 HC O +10 UC +20 HC O +40 HCAn object of mass 3.00 g and charge 40.0 UC is attached to a string and placed in a uniform electric field that is inclined at an angle of 30.0" with the horizontal. The object is in static equilibrium when the string is horizontal. E field lines Q mg 30 Question 9 (1 point) Find the magnitude of the electric field (in N/C). Your Answer: Answer Question 10 (1 point) Find the magnitude of the tension in the string (in N). Your Answer: AnswerThe figure shows an electron entering a parallel-plate capacitor with a speed of 5. 00 x 105 m / S. The electric field of the capacitor has deflected the electron downward by a distance of 0.618 cm at the point where the electron exits the capacitor. 2.25 cm 0.618 cm E + + + + + + + + Question 11 (1 point) Find the magnitude of the electric field between the capacitor plates (in N/C). Your Answer: Answer Question 12 (1 point) Find the speed of the electron as it exits the capacitor (in m/s). Your Answer: AnswerThe charge in the picture is negative. E field lines True False