An electron with a kinetic energy of 3.90 eV collides with a sodium atom. What possible wavelengths of light are subsequently emitted?
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An electron with a kinetic energy of 3.90 eV collides with a sodium atom. What possible wavelengths of light are subsequently emitted?
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- A hydrogen atom (mass= 1.672 x 10-27 kg) quantum jumps from the fourth excited state to the first excited state by emitting a photon. What is the kinetic energy (J) of the recoiling atom? 4.81 x 10-27 O 4.31 x 10-28 O 1.14 x 10-28 O 5.56 x 10-28 O 3.17 x 10-28 O 3.56 x 10-28 O 6.05 x 10-28 O 2.52 x 10-28 06.97 x 10.28 O 9.11 × 10-28The kinetic energy of an electron accelerated in an x-ray tube is 94.5 keV. Assuming it is nonrelativistic, what is its wavelength? Take the mass of an electron to be 9.11 × 10 31 kg. pm 0.00388For light with a wavelength of 350 nm and with an intensity of /= 10-8 W/m², what is the number of photons/(m²s) in the light beam?
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