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- How many electrons should be removed from an initially uncharged spherical conductor of radius 0.300 m to produce a potential of 7.50 kV at the surface?arrow_forwardTwo spherical conductors of radius R1 = 3 cm and R2 = 10 cm, initially uncharged, are connected to each other by a conducting wire (with negligible resistance). A total charge Q = -8 - 10-9 c is placed on the system. The system is then allowed to reach electrostatic equilibrium. VR Q: | Which of the following is correct after electrostatic equilibrium? OQ, = -0: OQ, +Q2 = Q OQ, = Q2 What is the value of charge b. Q1? Q1 = 'What is the value of charge Q2? Q2 =arrow_forwardYou are working in a biology lab during your summer break. Your supervisor asks you to perform an experiment to find the effective spring constant (in N/m) of a partial molecule of DNA (deoxyribonucleic acid). You perform experiments and find that a single straight portion of a DNA molecule is 2.32 µm long. You then perform an activity that charges the ends of the molecule; each end becomes singly ionized: negative on one end, positive on the other. After the ends are charged, the molecule shrinks by 1.25% of its length. Use the particle in equilibrium model to balance the electric and elastic forces on a particle at one of the ends of the molecule. N/marrow_forward
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- A lab technician wishes to model the process by which an airplane allows any charge build-up acquired in flight to leak off. She is aware that planes have needle shaped metal extensions on the wings and tail to accomplish this and that the process works, because the electric field around the needle is much larger than around the body of the plane, causing dielectric breakdown of the air and discharging the plane. Her model consists of two conducting spheres connected by a conducting wire. The sphere representing the plane has a radius of 6.00 m, the sphere representing the tip of the needle has a radius of 2.00 cm, and a total charge of 68.0 µC is placed on the combination. (a) Determine the electric potential (in V) at the surface of each sphere. V Vlarge sphere = V small sphere V (b) Determine the electric field (in V/m) at the surface of each sphere. magnitude TElarge sphere V/m = direction away from the sphere magnitude TEsmall sphere V/m direction away from the spherearrow_forwardSeveral electrons are placed on a hollow conducting sphere. They become uniformly distributed on the sphere's outer surface. become randomly distributed on the sphere's outer and inner surfaces. clump together on the sphere's inner surface. clump together on the sphere's outer surface. become uniformly distributed on the sphere's inner surface.arrow_forwardElectric charge can accumulate on an airplane in flight. You may have observed needle-shaped metal extensions on the wing tips and tail of an airplane. Their purpose is to allow charge to leak off before much of it accumulates. The electric field around the needle is much larger than the field around the body of the airplane and can become large enough to produce dielectric breakdown of the air, discharging the airplane. To model this process, assume that two charged spherical conductors are connected by a long conducting wire and a charge of 70.0 μC is placed on the combination. One sphere, representing the body of the airplane, has a radius of 6.00 m, and the other, representing the tip of the needle, has a radius of 2.00 cm. (a) What is the electric potential of each sphere? r = 6.00 m: V V r = 2.00 cm: (b) What is the electric field at the surface of each sphere? r = 6.00 m: V/m r = 2.00 cm: magnitude direction magnitude direction ---Select--- ---Select--- V/m O HER Carrow_forward
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- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning