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A hydrogen atom initially in its ground state (n=1) absorbs a photon and ends up in the state for which n=3.
Find the energy of the absorbed photon?
If the atom returns to ground state, determine what photon energies could the atom emit?
Determine the kinetic and potential energies of an electron in the ground state of the hydrogen atom.
a person walks first at a constant speed of 4.80 ms along a straight line from point circle a to point circle b and
17.8 grams of liquid water are at 0 degrees celesius and another 17.8 grams are at 100 degrees celsius. What is the mass (in grams) of the liquid water that remains
Two cars, A and B, are traveling in the same direction, although car A is 158 m behind car B. The speed of A is 26.8 m/s, and the speed of B is 18.6m/s. How much time does it take for A to catch B?
A closed organ pipe is 0.5m long. If the speed of sound is 340m/s , What is the pipe's fundamental frequency
An automobile has a vertical radio antenna 1.1m long. Theautomobile travels at 79.4 km/h on a horizontal road where Earth'smagnetic field is 58.5 μT directed toward the north and downward at an angle of 46.9o below the horizontal.
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 54 dB by an observer 10 km away. Treat the horn as a point source and neglect any absorption of sound by the air. What is the average power generated..
You observe that 28 crests of a waterwave pass you each minute. If the wavelength is 12 m, what is the speed of the wave
What is the resulting compressional force on Earth. Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase.
Three air carts have masses, 4m,2m and m. the most massive cart hasan initial speed of Vo; the other two carts are at restinitially. All carts are equipped with spring bumpers that giveelastic collisions.
An electron with kinetic energy 3.10keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is47.0cm. Find the speed of the electron. Find the magnetic field.
Two tiny, spherical water drops, with the same charges of -7.20 x 10-17 C, have a center-to-center separation of 1.4 centimeter. Find how many excess electrons are on each drop
A satellite in Earth orbit has a mass of 106 kg and is at an altitude of 1.94 106 m.(Assume that U = 0 as r ? infinity), What is the potential energy of the satellite-Earth system
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