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Rutherford's scattering experiments gave the first indications that an atom consists of a small, dense, positively charged nucleus surrounded by negatively charged electrons. His experiments also allowed for a rough determination of the size of the nucleus. In this problem, you will use the uncertainty principle to get a rough idea of the kinetic energy of a particle inside the nucleus. Consider a nucleus with a diameter of roughly meters. Consider a particle inside the nucleus. The uncertainty in its position is equal to the diameter of the nucleus. What is the uncertainty of its momentum?
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.02 mT. obtain the radius of the circular path
Sound from the siren of an emergency vehicle has a frequency of 750.0 Hz and moves with a velocity of 343.0 m/s. What is the distance from one condensation to the next
A 500 nm wavelength light illuminates a soap film with an index of refraction 1.22 to make it look bright. what is the minimum thickness of the film
The distance between the endpoints is 2.79m and exactly 8 cycles are completed in 22.0 seconds. what is the radius, (in meters) and angular velocity of the circular motion
An unknown nucleus has twice the volume of a nucleus with 62 nucleons. What is the atomic mass number of the unknown nucleus
A 45.0 kg person, standing 1.3 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 2.80 m/s relative to the ground. Find out the resulting angular speed of the disk (in rad/s)
A small metal bead, labeled A, has a charge of 29nC . It is touched to metal bead B, initially neutral, so that the two beads share the 29nC charge, What is the charge qA and qB on the beads
A ball is dropped from a high building. Using the approximate value of g = 10 m/s2, find the change in velocity between the fourth and fifth second of its flight
1. A modern-day zeppelin holds 8,280 m3 of helium, Compute its maximum payload at sea level
In a semiclassical model of the hydrogen atom, the electron orbits the proton at a distance of 0.053 nm. What is the electron's potential energy
An object is placed in front of a concave mirror with a focal length of 37 cm. What is the position of the resulting image if the image is upright
Two wooden crates rest on top of one another. The smaller top crate has a mass of m1 = 16.0 kg and the larger bottom crate has a mass of m2 = 90.0 kg. what is the acceleration of the lower crate
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