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Two electrons are located at two of the vertices of an equilateral triangle, one at each vertex. The length of one side of the triangle is 1.00 nm. What is the net electric field at the third vertex?
An instructor wants to use a lens to project a real image of a light bulb onto a screen 2.27 m from the bulb. what focal length lens will be needed
A force of 10.0 N is applied to a wire with an un-stretched length of 4.00 m and a diameter of 5.00 mm. If the wire changed length by 1.20 mm, then the stress in the wire is
A hanging wire made of an alloy of aluminum with diameter 0.12 cm is initially 2.8 m long. When a 40 kg mass is hung from it, the wire stretches an amount 1.57 cm. A mole of aluminum has a mass of 27 grams, and its density is 2.7 g/cm3.
A photon with a wavelength of 3.70×10?13 m strikes a deuteron, splitting it into a proton and a neutron. calculate their speeds after the photodisintegration
ultraviolet light with a frequency of 3.0x10^15 Hz strikes a metal surface and ejects electrons that have a maximum kinetic energy of 7.43 ev. what is the work function of the metal
A portion of a soap bubble appears green ( wavelength = 500 nm invacuum) when viewed at normal incidence in white light. find the two smallest, non-zero thickness for the soap film
A single circular loop of wire is placed inside a long solenoid with its plane perpendicular to the axis of the solenoid. What is the induced emf in the small loop
A 25 turn circular coil of length 5.9 cm produces a magnetic field of magnitude 1.6 mT at its center. Find the current in the loop
You stand on a frictionless platform that is rotating at anangular speed of 1.2 rev/s. Your arms are outstretched, and you hold a heavyweight in each hand. What is the resulting angular speed of the platform
A world-class sprinter accelerates to his maximum speed in 4.0s. He then maintains this speed for the remainder of a 100m race, What is his average acceleration for the entire race
Use the semi-infinite-well potential to model a deuteron, a nucleus consisting of a neutron and a proton. How many excited states are there
A charge of q = +7.22 ?C is located in an electric field. The x and y components of the electric field at this point are Ex = 6.48E+3 N/C, What is the magnitude of the force on the charge
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