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(a) If an electron makes a transition from the n = 4 Bohr orbit to the n = 3 orbit, determine the wavelength of the photon created in the process.
nm
(b) Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when this photon is emitted.
ms
A 100 Ohm resistor dissipates heat to its surroundings, isothermally. The resistor maintains a constant temperature of 300 K. What is the change in entropy of the resistor
Speedboat A negotiates a curve whose radius is 198 m. Speedboat B negotiates a curve whose radius is 290 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
The sport with the fastest moving ball is jai alai, where measured speeds have reached 303km/h. If a professional jai alai player faces a ball at that speed and involuntarily blinks, he blacks out the scene for 100ms. How far does ball move throughou..
A charge of −1 Coulomb is placed at the 100-cm mark of the same meter stick. Elucidate is it possible to place a proton somewhere on the meter stick so that the net force on it due to the two charges is 0?
Two tiny spheres have the same mass and carry charges of the same magnitude. Determine the charge magnitude
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
define How fast are the waves moving.
Its walls are equally high and 11 m apart. He takes off by driving a motorcycle up a short ramp sloped at an angle of 24°. Illustrate what minimum speed must he have in order to clear the canyon?
A certain alarm clock ticks four times each second, with each tick representing half a period. What is the torsion constant of the hairspring
A charged particle A exerts a force of 2.75 ?N to the right on charged particle B when the particles are 12.0 mm apart. Particle B moves straight away from A to make the distance between them 17.6 mm. What vector force does particle B then exert o..
Two sheets of polarizing material are placed with their transmission axes at right angle to one another. What is the intensity of the transmitted light when the middle sheet is removed
A coaxial cable consists of a cylindrical metal sheath of radius b=3.5cm surrounding a conducting wire with outer radius a=.6cm
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