A foam ball has a mass of 15 g and a charge of 20 uC. What is the magnitude of the electric field needed to keep the ball from falling down? O 1.75 x 10^3 N/C O 9.74 x 10^3 N/C O 7.35 x 10^3 N/C O 4.15 x 10^3 N/C O 5.65 x 10^3 N/C
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A foam ball has a mass of 15 g and a charge of 20 uC. What is the magnitude of the electric field needed to keep the ball from falling down? Group of answer choices 1.75 x 10^3 N/C 9.74 x 10^3 N/C 7.35 x 10^3 N/C 4.15 x 10^3 N/C 5.65 x 10^3 N/C


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- Four identical metal spheres have charges of qA = -8.0 μC, qb=-2.0 μC, qc=+5.0 µC, and qp=+12.0 µC. (a) Two of the spheres are brought together so they touch, and then they are separated. Which spheres are they, if the final charge on each one is +5.0 μC? A and C V (b) In a similar manner, which three spheres are brought together and then separated, if the final charge on each of the three is +3.0 µC? A+B+D B+C+D A+B+D A+C+D A+B+C N = Number harge on each of the three separated spheres in part (b) is +3.0 µC. How many electrons would have to be added to one of to make it electrically neutral? i UnitsA 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?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
- What is the magnitude of the electric field needed for a proton to gain an acceleration of 500,000 m/s?? The charge of a proton is 1.6 x 10 19 C and the mass of an electron is 1.67 x 107 kg. 4.79x 10N/C 4900.000 N/C 3.21 N/C 0,0052 N/CP6E4Four point charges, q1 = 8.2 uC, q2 = -7.8 uC, q3 = 1.7 uC and q4 = -5.9 uC, are arranged in a square with side lengths L = 7.5 cm. What is the magnitude of the electric field at the centre of the square?
- Two plastic balls, each of radius 17.9 cm, are placed so that there is a 36.6 cm space between them. The charge on one ball is +3.20 nC and the charge on the other is -4.70 nC. What is the magnitude of the electric field at a point directly midway between the two balls? 2.22×103 N/C 542 N/C 103 N/C 530. N/CWhat should be the direction and magnitude of the vertical electric field that will balance the weight of a plastic sphere with the charge Q= +1.5 nC and mass m= 1.8 g? 3.2 x 10^5 N/C positive y-direction 1.2 x 10^6 N/C in +y-direction 1.2 x 10^6 N/C in negative y-direction 3.2 x 10^5 N/C in negative y-directionA small plastic ball of mass 5.86 x 10-3 kg and charge +0.178 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the vertical. The area of each plate is 0.01293 m². What is the magnitude of the charge on each plate? Number p Units + + 30.0⁰ + TA TA T I