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Three identical point charges (q1=q2=q3=5.0 nc) are located at three corners of a square with 1.0 cm each side. An electron is located at the remaining corner of the square
a. find the potential energy U of the electron.
b. find the electric potential V at the location of the electron.
The electric field in a region of space has the components Ey = Ez = 0 and Ex = (5.90 N/(C·m))x. Point A is on the y axis at y = 4.30 m, What is the potential difference (in V) VB - VA
A bat moving with a speed of 3.15{\rm m/s} and emitting sound of 39.0{\rm kHz}, What frequency is heard by the moth
An electron in a neon tube is accelerated from rest through a 2000-V potential difference. What velocity does the electron attain
A boat takes 3.30 hours to travel 40.0 km down a river, then 5.00 hours to return. How fast is the river flowing
A beaker of mass 1.5kg containing 3.2kg of water rests on a scale. A 3.2kg block of a metallic alloy of density 53400 kg/m is suspended from a spring scale is submerged in water of density 1000 kg/m.
In a photoelectric effect experiment, a metal sample is illuminated by 10.0 mW of ultraviolet light of wavelength 240 nm. What is the longest wavelength of light that can knock electrons out of this metal
A bead with a mass of 0.02 g and a charge of 20nC is free to slide on a vertical rod. At base of the rod is a fixed 20nC charge.
An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized and has the charge of +e. If the field meter reads 0.000000202 N/C, how far away is it from the ion.
The G string on a violin has a fundamental frequency of 196 Hz. It is 33.0 cm long and has a mass of 0.500 g. what is the effective length of her string
An ideal air conditioner operating on a Carnot cycle absorbes heat Q2 from a house at temperature T2 and discahrges Q1 to the outside at temperature T1, consumng elecrical energy E.
A projectile is launched perpendicularly upward from a planet of mass M; and radius R; its initial speed is twice the escape speed. Derive an expression for its speed as a function of the distance from the center of the planet.
A 130 g copper bowl contains 240 g of water, both at 20.0°C. How much energy (in calories) is transferred to the water as heat
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