Physics, 30.11.2019 05:31, capricorn0115
Ahydrogen atom is placed in a (time-dependent) electric field e=e(t)k^. calculate all four matrix elements h′ij of the perturbation h^′=eez between the ground state (n=1) and the (quadruply degenerate) first excited states (n=2). also show that h′ii=0 for all five states.
note: there is only one integral to be done here, if you exploit oddness with respect to z; only one of the n=2 states is "accessible" from the ground state by a perturbation of this form, and therefore the system functions as a two-state configuration-assuming transitions to higher excited states can be ignored.
Answers: 3
Physics, 22.06.2019 11:50, azertyqwerty123
Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?
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Physics, 22.06.2019 14:40, viktoria1198zz
14. a body is projected with velocity vi from a. at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is
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Physics, 23.06.2019 03:10, yasarhan2
You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move
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Ahydrogen atom is placed in a (time-dependent) electric field e=e(t)k^. calculate all four matrix el...
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