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a) What is the acceleration of an electron in a circular Bohr orbit of radius
[4(pi)(epsilon_naught)(hbar^2)/(mass_electron)(e^2^)] in a hydrogen atom?
b) According to the classical electrodynamics, what is the rate at which the electron loses energy by radiation? Hint: the classical formula for energy lost by electromagnetic radiation is dE/dt=[(-e^2)(a^2)/(6)(pi)(epsilon_naught)(c^3)]
c) If the electron continues to radiate at this rate, how long does it take to reduce its enenergy from -13.6 eV to -2 x 13.6 eV?
A wire loop consists of two semicircles connected by straight segments. The inner and outer radii are R1 = 0.2 and R2 = 0.8 m, respectively. A current of 1.5 A flows in this loop with the current in the outer semicircle in the clockwise direction. Wh..
Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Calculate the magnitude and duration of the acceleration
An object of mass m = 5.45kg is suspended from the ceiling of an accelerating truck by a string. What is the magnitude of the tension in the string
Suppose the particle has a charge q = 2.6 ?C and is moving with a velocity of magnitude v = 1.2 × 103 m s?1, Draw a diagram to indicate the direction of the force on the particle
A 3 centimeter tall statue is 48 centimeter in front of a convex lens having a focal length of magnitude 20 centimeter. Determine is the image of the statue real or virtual
a 26.5 kg boy slides down a steep slide at a water park that is 10.9 m long and angled 75 degrees above the ground. what is the magnitude of the boys acceleration as he travels down the slide
Two long, parallel wires, each with the mass per unit length of 43 g/m, are supported in a horizontal plane by 6-cm long strings. Each wire carries the similar current, I, causing the wires to repel each other so that the angle, θ, between the sup..
A 3.0 m tall, 64 cm diameter concrete column supports a 205,000 kg load. By how much is the column compressed
A force of 100 N is applied to a 50kg mass in the direction of motion for a distance of 6.0m, how much work is done by the varying force
A sample of helium-4 behaves as an ideal gas as it isheated at constant pressure from 294 K to 404 K. what is the mass of helium present
The surface area of an unclothed person is 1.55 m2, and his skin temperature is 33.0°C. At what rate is energy radiated by the body
A magnetic dipole with a dipole moment of magnitude 0.0205 J/T isreleased from rest in a uniform magnetic field of magnitude 56.3mT. The rotation of the dipole due to the magnetic force on it is unimpeded.
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