A charge of -20 nC is placed in a region with constant electric field of 4.5 x 10^5 N/C directed in the +y direction. What is the magnitude of the force on the negative charge? a. 0.0090 N b. 9.0 N c. 900 N  d. 9000 N  e. 9.0 x 10^5 N  f. None of the above

22. A beam of electrons passes through an electric field where the magnitude of the electric field strength is 3.00 x 103 newtons per coulomb. What is the magnitude of the electrostatic force exerted by the electric field on each electron in the beam? A. 5.33 × 10-23 N C. 3.00 x 10³ N B. 4.80 x 10-16 N D. 1.88 × 1022 N

The electric field at 2.0 m from a strut charge has a magnitude of 80,000 N / C. Determine the intensity of the electric field at a distance of 4.0 m.   a. 40,000 N/C   b. 160,000 N/C   c. 320,000 N/C   d. 20,000 N/C

QUESTION 2 Tw stationary protons experience a repulsive force of magnitude 2.50 x 10-9 N. What is the distance between the protons? The charge of a proton is 1.602 x 10-19 С. a. 6.13 x 10-10 m b. 1.66 x 10-10 m C. 2.11 x 10-10 m. d. 3.04 x 10-10 m e. 8.20 x 10-10 m.

A particle with charge of -3.5 mC feels an electric force of 0.350 N West. What are the magnitude and direction of the electric field causing this force. Group of answer choices a. .00123 N/C East b. 100 N/C East c. .00123 N/C West d. 100 N/C West

A positive charge of 4 µC exerts a force of 8 N on an unknown charge 20 cm away. The unknown charge is: Select one: Oa. +44 µC b. None of these O C. +8.9 µC d. -8.9 µC

Two charges of 3.00x10-6 C and -1.25x10-6 C are placed at a separation of 20cm. a. Determine where a third charge should be placed on the line connecting the two charges so that it experiences no net force due to these two charges. b. Determine the acceleration of a proton located mid-way between the two charges. Thank you

What is the resultant magnitude and direction of the force on a 5.9 µC charge situated on the y-axis, 5.3 cm from the point of origin, due to a pair of 4.3 µC charges located on the x-axis at opposite sides of the point of origin, each at distance of 4.4 cm from the point of origin? a. 17.2 N b. 74.0 N c. 73.0 N d. 76.0 N e. 61.4 N The surfaces of a lipid bi-layer forming the membrane around a cell with a radius of 1.8 µm has a residual charge qr = 10.6x10-15 C on outside of the bi-layer, and the same amount of negative charge on the inside. What is the force in pN (x10-12 N) on a singly-charged positive ion (q =1.6 ×10-1⁹ C) located on the outer surface of this membrane? Hint: Use F = q E = q (o/e) with o = qr/A = qr/ (4π r²) and = 8.85 x 10-12 F.m-1. Answer:

3. A charged particle experiences a force of 150 N when placed in an electric field of magnitude ɛ. If the same charged particle is placed in an electric field of magnitude 5ɛ, determine the resulting force. a. 750 N b. 30 N c. 300 N d. 75 N e. none of the above

13. A charge q = 5 µC is located at the coordinates (0, 4 cm) as shown below. What is the magnitude of electric field at point P, located at (3 cm, 0) due to q? A. 1.8×10³ N/C B. 1.8×104 N/C C. 1.8×105 N/C D. 1.8×106N/C E. 1.8×10¹ N/C 4 cm q=5μC 3 cm P