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Some of properties of a diatomic molecule NO can be described in terms of a effortless model in which two atoms are connected by a spring. Experiments explain that the spacing between allowed vibrational energy levels in NO is 0.23 eV. Assume you have a gas of 4 NO molecules. One molecule's vibrational energy is in ground state (n = 0), the second molecule is in first excited state (n = 1), the third molecule is in second excited state (n = 2), and the fourth molecule is in the third excited state (n = 3). If we suppose that all transitions from one excited states to lower-lying excited states happen with equal probability, what is ratio of the intensities of 0.23 eV, 0.46 eV, and 0.69 eV photons?
Four 1.8 kg masses are located at the corners of a square 0.20 m on each side. Find out the magnitude and direction of the gravitational force on a fifth 1.8 kg mass placed at the midpoint of the bottom side of the square.
Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 4.9 Ã- 105 m3, how many homes could this internal energy serve
An LC circuit is built with a 21.0mH inductor and an 8.00?F capacitor. The current has its maximum value of 0.500A at t =0s. How long is it until the capacitor is fully charged
A hollow cone (like a party hat) has vertex angle 2?, slant height L, and surface charge density ?. It spins around its symmetry axis with angular frequency ?. What is the magnetic field at the ti
A person weighs 689 N and the head is 53 N the average density of the person is 1010 kg/cubed meters how much force in N is required to keep a persons head out of the water.
The elementary particle called a muon is unstable and decays after 2.20 ?s, as observed in its rest frame, What lifetime do you observe for the muon
A 72 kg meteorite buries itself 5.0 m into soft mud. The force between the meteorite and the mud is given by , What was the speed of the meteorite
A 0.700kg block is attached to a spring with spring constant 14.5N/m . While the block is sitting at rest, find The amplitude of the subsequent oscillations
A point charge with q1 = +1.9 C is located at x = ?3.0 m, y = 0, and a second point charge with q2 = +6.5 C is at x = +1.0 m, y = +2.0 m. (a) What is the force exerted by q1 on q2? magnitude N direction ° counterclockwise from the +x-axis (b) What..
Taipei 101 (a 101-story building in Taiwan) is sited in an area that is prone to earthquakes and typhoons, What is the period of oscillation of the building
The average distance from the earth to the sun is called the astronomical unit (AU). does it obey Kepler's third law
an experiment is set up in which a red laser with a wavelength of 656.2m is directed through a large, irregularly shaped piece of synthetic material. What is the index of refraction of the synthetic material
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