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The nucleus of an atom consists of neutrons and protons (no electrons). A nucleus of a carbon-12 isotope contains six neutrons and six protons, while a nitrogen-14 nucleus comprises seven neutrons and seven protons. You perform a nuclear physics experiment in which you bombard nitrogen-14 nuclei with very high speed carbon-12 nuclei emerging from a particle accelerator. As a result of each such collision, the two nuclei disintegrate completely and a mix of dissimilar particles are emitted, including electrons, antiprotons, protons (with electric charge –e each), positrons (with charge e each), and various neutral particles (including neutrons and neutrinos). For a particular collision you detect the emitted products and find sixteen protons, three antiprotons, nine positrons, and twenty-six neutral particles. How many electrons are also emitted?
A cup of hot coffee is placed inside a large, well-insulated container. Over a five minute period, the entropy of the cup decreases by 100 J/K. What can you say about the entropy of the air surrounding the cup?
question a 575 ohms resistor and a 260mh inductor are connected in series with an ac generator with an rms voltage of
An infinite plane current sheet coincides with the xy plane. The surface current density is K'=K' y-hat where K'=const, Find the force per unit length on the wire
A gas is compressed at a constant pressure of 0.800 at m from 9.00 L to 1.00 L. In the process, 380 J of energy leaves the gas by heat. What is the work done on the gas? What is the change in its internal energy?
q1. the breaking stress for a wire of radius r of given material is f nms square. afterwards find the breaking stress
For the real or imaginary nucleus of 70X170, find the net electrical charge of the nucleus and the approximate radius of the nucleus
A hydrogen atom undergoes a transition from a 2p state to the 1s ground state. In the absence of a magnetic field, the energy of the photon emitted is 122nm. The atom is then placed in a strong magnetic field in the z-direction.
31.3 million excess electrons are inside a closed surface. what is the net electric flux through the surface
the electric potential immediately outside another charged conducting sphere is 200 v and 10.0 cm farther from the
A 2.10-kg ball, moving to the right at a velocity of +4.60 m/s on a frictionless table, collides head-on with a stationary 6.30-kg ball. Find the final velocities of (a) the 2.10-kg ball and of (b) the 6.30-kg ball if the collision is elastic. (c)..
a peanut is placed 42 cm in front of a two-lens system lens 1 nearest the peanut has a focal length f1 20 cm lens 2
A storage tank 30 m high is filled with gasoline. Calculate the force that acts on a square access hatch at the bottom of the tank that measures 0.5m by 0.5m
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