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In Bohr model of hydrogen atom, the average kinetic energy of the electron in the first excited state is four times the smaller than in the ground state. For a particle in a box, the kinetic energy for the first excited state is four times larger than the ground state. Explain.
Suppose you have a tube 1.20 m long, open on both ends. Determine the frequency of the 2nd overtone, assuming the speed of sound to be 343 m/s. Repeat for the same length tube but with a closed end.
a uniform magnetic field b is perpendicular to the plane of a circular loop of diameter 10 cm formed from wire of
Starting from rest, a basketball rolls from the top to the bottom of a hill, reaching a translational speed of 5.2 m/s. Ignore frictional losses. What is the translational speed of the frozen juice can when it reaches the bottom
What is magnitude of the difference in frequency
In the first 3.1 seconds of a bobsled run, the 45 kg sled is pushed until it reaches a speed of 1.14 m/s. What constant force is exerted by the bobsled team
A bag of cement of weight 325 N hangs from three wires, find the tensions in the wires
Cheetahs, fastest of the great cats, can reach 45 in 2 starting from rest. Assume that they have constant acceleration throughout that time, find their acceleration (in (a) and (b) ) and the distance (in (c) and (d) ) Q2. They travel during that t..
A technician wearing a circular metal band on his wrist moves his hand (from a region where the magnetic field is zero) into a uniform magnetic field of magnitude 2.0 T in a time of 0.30 s. find the magnitude of the average emf induced in the band
A rock is dropped off a bridge and hits the water below 3 s later. The rock is going 30 m/s before it hits the water. what is the height of the bridge above the water
Two charged objects experience a mutual repulsive force of 0.86N. If the charge of one of the objects is reduced by half and the distance separating the objects istripled, what is the new force? (Enter the magnitude of the force.)
The left end of a long glass rod 6.00cm in diameter has a convex hemispherical surface 3.00cm in radius. obtain the refractive index of the liquid
A plane is headed east with an air speed of 205.0 m/s. The wind blows southeast at 32.0 m/s. Determine the velocity of the plane relative to the earth.
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