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Seven electrons are trapped in a one-dimensional infinite potential well of width L. What multiple of h2/8mL2 gives the energy of (a) the first excited state, (b) the second excited state, and(c) the third excited state of the system? Suppose that the electrons do not interact with one another, and do not neglect spin.
Through a thunderstorm, 3.8 s elapses between observing alighting flash and hearing the resulting thunder. Just about how far away in kilometres and miles was the lightning flash?
As a new electrical technician, you are designing a large solenoidto produce a uniform 0.160 T magneticfield near the center of the solenoid. You have enough wire for4875 circular turns. This solenoid must be 1.35 m long and25.0 cm in diameter.
A model rocket blasts off and moves upward with anacceleration of 12m/s^2 until it reaches a height of 27m, at whichpoint its engine shuts off and it continues it flight in freefall. what is the max height attained by the rocket?
an elevator and its load have a combined mass of 1450 kg. find the tension in the supporting cable when the elevator
A brick is initially 7.72 cm high and an aluminum can is initially 7.73 cm high. By how much should their temperatures be raised in order for the brick and the can to have accurately the similar height?
You are designing an elevator for a hospital. The force exerted on a passenger by the floor of the elevator is not to exceed 1.51 times the passenger's weight. What is the maximum speed of the elevator
A vibrating string with a uniform linear mass density exhibits a single-loop standing wave pattern with a frequency of 600 Hz. determine the ratio of the new tension to the old
A hollow sphere of radius 0.50 m, withrotational inertia I = 0.038 kgm2 about a line through its center of mass, rollswithout slipping up a surface inclined at 40° to the horizontal. At a certain initialposition, the sphere's total kinetic energy ..
A tungsten target is struck by electrons that have been accelerated from rest through a 29.1-kV potential difference. Find the shortest wavelength of the radiation emitted
A helium filled ballon at atmospheric pressure is tied to a 3.0 m long, 40g string. The ballon is spherical with mass 0.25 and radius 0.40 m. When released, it lifts a lengh (h) of the string, and then remais in equilibrium.
A 2kg mass is loaded into a spring cannon. The cannons spring has a constant k=4000N/m and the spring is compressed 0.8m. The mass is initially at rest. what is the initial velocity of the mass
a wave of amplitude ai and wave number ki is incident on the junction of two strings. if the wave number in the second
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