The two spherical shell has a charge of q1 = 0.30nC and q2 = 0.5nq. The radius of r1=7.5cm and r2 = 2.5cm. %3D %3D What is the new votage value in volts, after the charge transfer is completed between the two spheres? 92
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Given:
Charge of smaller shell
Charge of bigger shell
Radius of bigger shell
Radius of smaller shell
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- A PVC rod is rubbed with fur. During the process 5 x 1010 electrons are transferred from the fur to the rod. What is the net charge of the fur? A. +8.0 nC В. -8.0 nC С. +50 nC D. -50 nCMost workers in nanotechnology are actively monitored for excess static charge buildup. The human body acts like an insulator as one walks across a carpet, collecting -50 nC per step. What charge buildup will a worker in a manufacturing plant accumulate if she walks 31 steps? charge buildup from 31 steps: How many electrons are present in that amount of charge? electrons present: nC maximum number of steps: electrons If a delicate manufacturing process can be damaged by an electrical discharge greater than 1012 electrons, what is the maximum number of complete steps that any worker should be allowed to take before touching the components? steps1. In the following problems, you don't need to understand the physics to complete the questions. Focus on the equations. (a) The force of gravity, F, between two masses, m and M, separated by a distance r, is given by GmM where G is a constant. Write an equation of r in terms of other variables in the equation F= for F: r= GmM F (b) The electric force between two charges q=3-10-6 units and Q=-4·10¯6 units separated by a distance, d = 3.10-4 units, is given by F= kqQ d² I where k=9. 10⁹ units. Without using a calculator, calculate the F. F= -12x10 -5 Ⓡ√
- A metallic plate holds a charge of Q = -18 nC. Does the plate have excess or lack of electrons? Excess What total number of elementary charges does Q represent? Units no units required The number of elementary charges, N = 1.125E11 After 43.1 × 10¹0 electrons were added to the plate, what is the new net charge on the pla The new charge of the plate, Qnew = Units nCA bead of 5grams that is amber is suspended by a string in a uniform horizontal electric feild which has a magnitude of 4300 N/C. The bead is in equibrium when the string makes an angle of 33degrees what is the net charge carried by the amber bead? a. -6.2μC b. -7.4 μC c. 9.6 μC d. 6.2μC e. 7.4 μCA very large plane of charge with o= 4.0x10 c/m² lies in the y-z plane. A single charge Q=3.0x 10 C lies on the +x axds at x- 2.0 m. The electric field in N/C at x=5.0 m has the value a. 104. b. 226. c. 300. d. 526. e. 752.
- Two parallel plates that are initially uncharged are separated by |1.7 mm. What charge must be transferred from one plate to the other if 19.0 kJ of energy are to be stored in the plates? The area of each plate is 16.0 mm2. O 6.0 mC 80 μC O 40 µC O 56 µC5 a. How many electrons are needed to form a charge of Q1 = -7 nC? b. If you touch two charge balls of - 60 nC and 70 nC, what will be the net charge after touching them together?The figure below shows the electric field lines for two charged particles separated by a small distance. 92 (a) Determine the ratio q,/q2. 0.33 This is the correct magnitude for the ratio.
- le6 10 0.8 O 0.6 w 0.4 23 - 0.2 0.0 0.0 0.5 10 15 2.0 r (m) Figure plots the electric field of a sphere with a uniformly distributed positive charge. The maximum of the field is 1x10° N/C .What is the charge on the sphere?Two identical metal spheres A and B are connected by a plastic rod. Both are initially neutral. 2.0×1012 electrons are added to sphere A, then the connecting rod is removed. A)Afterward, what is the charge of A?B)Afterward, what is the charge of B?1. Compute the electric field at a point 2.0 cm from q2 along a line running toward q3 in the figure. Express the answer in component notation y 91 = -10 μC 0.10 m X 94 = +5.0 μC 0.10 m 0.10 m 92 –10 μ.C 0.10 m 3 = +5.0 μC