A small object of mass 120 mg is observed to undergo an acceleration of magnitude 4.6 m/s^2 when it is placed in a constant electric field of magnitude 850N/C. What is the charge on the object?

A 0.10 g honeybee acquires a charge of 20 pC while flying. The electric field near the surface of the earth is typically 100 N/C , directed downward. What is the ratio of the electric force on the bee to the bee's weight? What electric field strength would allow the bee to hang suspended in the air?

A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 25.0 cm in a uniform electric field of magnitude E = 1.00 x 10³ N/C as shown in the figure. If the ball is in equilibrium when the string makes an angle = 17.5° angle with the vertical as indicated, what is the net charge on the ball? 10 E=1.00 x10³ N/C L m

Three charges are placed along the x-axis: q1 = 3.00 µC at X1 = -20.0 cm, q2 = -5.00 µC at x2 = 10.0 cm, and q3 = 6.00 µC at x3 = 25.00 cm. Determine the magnitude of the electric field at the origin. O 4 69x106 N/C O 2 96x106 N/C O 6 04x106 N/C O 4.31x106 N/C