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- A charge of 36.3 nC is transferred to a neutral copper ball of radius 4.35 cm. The ball is not grounded. The excess electrons spread uniformly on the surface of the ball. What is the number density (number of electrons per unit surface area) of excess electrons on the surface of the ball?Note that in Figure 20.28, both the concentration gradient and the Coulomb force tend to move Na+ ions into the cell. What prevents this? Figure 20.28 The semipermeable membrane of a cell has different concentrations of ions inside and out. Diffusion moves the K+ and Cl ions in the direction shown, until the Coulomb force halts further transfer. This results in a layer of positive charge on the outside, a layer of negative charge on the inside, and thus a voltage across the cell membrane. The membrane is normally impermeable to Na+.What is the magnitude of the repulsive force between a 3.4 mC charge and a 6.3 mC charge if they are separated by a distance of 93 centimeters? Report your answer kN rounded up to the tenths place
- In the force vs. 1/r2 data, the following graph was generated. Given that q1 =10 μC and q2 = 1 μC, how do you solve for the Coulomb constant (k)?Coulomb constant, k=8.987×109N⋅m2/C2. Vacuum permitivity, ϵ0=8.854×10−12F/m. Magnitude of the Charge of one electron, e=−1.60217662×10−19C. Mass of one electron, me=9.10938356×10−31kg. Mass of one proton, mp=1.6726219×10−27kg, Charge of one proton, ep=1.60217662×10−19C Unless specified otherwise, each symbol carries their usual meaning. For example, μC means microcoulomb . PartI Suppose, We have a dipole where 3 charges q1=3e,q2=2e,q3=−5e are placed on the vertices of the square as shown in the figure given above. Side length of the square is 3nm. a) Calculate the X and Y components of dipole moment of this dipole. b) Calculate the electric potential at point P due to this dipole. PartII Now suppose, we have a continuous charge distribution D for which potential at any point (x,y) in the xy plane is given by, V(x,y)=3xy(mx+n), where V is in volt, coordinates x, y are in meter, m, n both are constant and m=1N/Cm2, n=1N/Cm. c) Calculate the potential at point P due to continuous charge…Coulomb constant, k=8.987×109N⋅m2/C2. Vacuum permitivity, ϵ0=8.854×10−12F/m. Magnitude of the Charge of one electron, e=−1.60217662×10−19C. Mass of one electron, me=9.10938356×10−31kg. Mass of one proton, mp=1.6726219×10−27kg, Charge of one proton, ep=1.60217662×10−19C Unless specified otherwise, each symbol carries their usual meaning. For example, μC means microcoulomb . PartI Suppose, We have a dipole where 3 charges q1=3e,q2=2e,q3=−5e are placed on the vertices of the square as shown in the figure given above. Side length of the square is 2nm. a) Calculate the dipole moment of this dipole.
- Coulomb constant, k=8.987×109N⋅m2/C2. Vacuum permitivity, ϵ0=8.854×10−12F/m. Magnitude of the Charge of one electron, e=−1.60217662×10−19C. Mass of one electron, me=9.10938356×10−31kg. Mass of one proton, mp=1.6726219×10−27kg, Charge of one proton, ep=1.60217662×10−19C Unless specified otherwise, each symbol carries their usual meaning. For example, μC means microcoulomb . PartI Suppose, We have a dipole where 3 charges q1=3e,q2=2e,q3=−5e are placed on the vertices of the square as shown in the figure given above. Side length of the square is 2nm. a) Calculate the dipole moment of this dipole. X component of the dipole: Y component of the dipole: b) Calculate the electric potential at point P due to this dipole. PartII Now suppose, we have a continuous charge distribution D for which potential at any point (x,y) in the xy plane is given by, V(x,y)=3xy(mx+n), where V is in volt, coordinates x, y are in meter, m, n both are constant and m=1N/Cm2, n=1N/Cm. c) Calculate the potential at…Number 25.3 should be attended to plsWhat is the charge of q if location A is 2.40 m from the charge, location B is 4.5m away from the charge, and Vb-Va=45V?
- You have 2.4 kg of water. One mole of waterhas a mass of 18.1 g/mole and each moleculeof water contains 10 electrons since water isH2 O.What is the total electron charge containedin this volume of water? The elementarycharge is 1.6 × 10−19 C .1. −1.17116 × 1082. −1.72253 × 1083. −9.58218 × 1074. −1.27762 × 1085. −7.45281 × 1076. −1.61487 × 1087. −2.12937 × 1078. −1.50722 × 1089. −3.22975 × 10710. −1.07658 × 108Answer in units of CWith what electrical force do an electron and a proton located 10 ^ -7 m apart attract or repel each other?Data: qe = -1.6⋅10 ^ -19C; qp = 1.6⋅10 ^ -19C; K = 9⋅10 ^ 9N⋅m ^ 2 / C ^ 2Assuming that a cloud of electrons confined in a region between two spheres of radii 1 cm and 3 cm has a charge density of: (0.0003cos2theta)/R2 Coulomb/m3 Find the total charge contained in the region
