A metal ball with a radius of R = 5.0 cm is charged with a charge of Q = 10 nC. Draw a ray from the center of the ball. On the ray we put point A at a distance R / 2 from the center of the ball and point B at a distance of 3R / 2 from the center of the ball. Find the potential difference between points A and B
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A metal ball with a radius of R = 5.0 cm is charged with a charge of Q = 10 nC. Draw a ray from the center of the ball. On the ray we put point A at a distance R / 2 from the center of the ball and point B at a distance of 3R / 2 from the center of the ball. Find the potential difference between points A and B.
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- Charge q = 140 µC is distributed uniformly throughout.a spherical volume of radius R = 8.1 cm. Let V= 0 at infinity. What are (a) V at radial distancer= 2.2 cm and (b) the potential difference between points at r = R and r = 0 (VR-Vo)? %3D %3D %3D (a) Number Units (b) Number i UnitsThe image shows three charges fixed in place. The distance in the image is ? = 0.2 m and the charge is ? = 4×10−16 C An electron (not pictured) initially at point A has a speed of 106 m/s as it moves toward point B. What is the speed of the electron at point B?Consider the following. B 0.500 mm 60.0° (a) Red blood cells often become charged and can be treated as point charges. Healthy red blood cells are negatively charged, but unhealthy cells (due to the presence a bacteria, for example) can become positively charged. In the figure, three red blood cells are oriented such that they are located on the corners of an equilateral triangle. The red blood cell charges are A = 1.80 pC, B = 6.60 pC, and C = -4.40 pC. Given these charges, what would the magnitude and direction of the electric field be at cell A? magnitude N/C direction ° counterclockwise from the +x axis (b) If the charge of cell A were doubled, how would the electric field at cell A change? O The magnitude of the field would be doubled. O The field would be unchanged. O The magnitude of the field would be halved. O The magnitude of the field would be quadrupled.
- A proton with a kinetic energy of 1.63 keV (1eV-1.602.10-19 J), that is at height 24.9 cm above a horizontal charged nonconducting plate with surface charge density - 3.60 μ C/m², is fired horizontally across this plate. What is the height of the proton after it has traveled a horizontal distance of 3.56 cm? 18.6 cm O 13.8 cm O 20.9 cm O 15.4 cm O 20.2 cm Save for Later Submit AnswerA solid core carrying excess charge, Q = 47.6 μC, is located at the center of concentric spherical shells. The two spheres are joined by a hollow plastic tube that starts at the radius of the small sphere, r = 13.5 cm, and ends at the radius of the large one, R = 29.7 cm. When a charge, q = 7.8 μC, is placed at the inner end of the tube and released from rest, it accelerates straight through the tube and out the other end as shown. AUE= (a) How much did the electric potential energy change as the particle moved from one end of the tube to the other? Write your answer symbolically, in terms of Q, q, r, R and constants (as needed), then calculate its numeric value. kao ( + - 1/2 ) R = 13.5 J R x J (b) How much electric potential energy will be left when the little charge is 56.7 cm from the core? UE = 5.89 OTwo identical metal blocks resting on a smooth horizontal surface are connected by a lightweight spring having a spring constant k = 0.2 N/m, as shown in the figure. The length of the spring before it is stretched is L0 = 10 cm. A total charge Q is carefully applied to the block, which is assumed to be a point charge. Because the blocks are given an electric charge, the spring is stretched so that its length becomes L = 10.2 cm. Find Q!
- A 8-g charged plastic sphere charged to 75 µC is on top of a plastic spring with spring constant k = 400 N/m, which has a relaxed length of 10 cm. You then place another charged object 1 cm above (not touching) the sphere. Now, the spring is 9.5 cm long. Find the charge on the new second object.A parallel plate capacitor consists of two rectangular, horizontally oriented plates, each with an area of 4.00 cm2, and separated by a distance of 0.300 mm. If the magnitude of the charge on each capacitor is 5.00 nC, what is the magnitude of the electric field between both plates?NEW General HI Q Q ↓ Close 5. The figure shows a charged dielectric sphere centered at the origin and touches an infinite line of charges at x=4 m. The charged line extends along the z-axes as shown. Find the magnitude of the electric field (in N/C) at x=3 m. z (m) y (m) Q= 10 nC X=4 m X (m). Infinite line charge with A= 4 nC/m A) 3.22 B) 50.1 C) 72 D) 67.8 E) 4.2 Image 11:36 AM 6185 Sunny 4× DEU 13