An oil droplet is given a very small amount of charge. Which of the following could not be the amount of charge that it has? 7.8×10^-19C O 6.4×10^-19C O 3.2x10^-19C 1.6x10^-19C

How much energy is stored by the electric field between two square plates, 9.1 cm on a side, separated by a 2.3-mm air gap? The charges on the plates are equal and opposite and of magnitude 15 nC. Express your answer using two significant figures and include the appropriate units. PE = Value Units Submit Request Answer * Previous Next 15:10 hp W 27/03/2022 2000 hp f6 4 f11 10 F12 f10 f7 II f5 f8 f9 insert prt sc ( 9- ) 0 & -backspa // 大 t6

Two large parallel plates are separated by a 0.015-m gap. The plates are connected to the terminals of a 12-V battery, which remains connected. a) What is the strength of the electric field in the region between the plates? b) What happens to the strength of the electric field if the gap between the plates is reduced to 0.010 m? Justify your answer. c) Does charge flow through the battery as the separation between the plates is being reduced? Explain your answer.

A positive charge q = 1.5 C moves from A to B as shown. At point A, it has kinetic energy 15 J. What is its kinetic energy at point B, in Joules? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

A point charge of 33 uC is placed at a distance of 36 cm from another identical charge. A charge of -1.5 uC is transferred from point a to point b as shown in the figure. Determine: a) The change in electrical potential energy b) If the -1.5 uC charge has an initial velocity of zero. What is its final velocity if it has a mass of 5.0 x 10-15 kg?

Ch 18 q3 In 1910 Rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil. He unexpectedly observed a few of the particles scattered almost directly backward. This result was not consistent with then current models of atomic structure and led Rutherford to propose the existence of a very dense concentration of positive charge at the center of an atom—the atomic nucleus. The alpha particle has a charge of +2e and the gold nucleus a charge of +79e. Suppose that an alpha particle is initially a great distance from the gold, has a kinetic energy of 4.20 MeV (4.20  106 eV), and is headed directly at a gold nucleus. How close will the particle come to the center of the nucleus? Treat the nucleus and the alpha particle as point charges.

An electron is launched from the surface of a charged sphere of diameter 5.90 cm. If the sphere has been charged to 9.90 nC what is the escape velocity of the electron? 1.23×107 m/s 3.26×107 m/s 7.75×107 m/s 8.10×1012 m/s

A mass of 8 X 10-24 kg has a charge of 4|e| where e is the charge on an electron. a) What is its KE at 4% of the speed of light? b) What is this in eV? c) What is the voltage needed to obtain this energy?