# Decisions of the control number 5 in physics. Variant № 2. SZTU

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Solution jobs quiz number 5 "Quantum Physics" Option number 2.
Non problems option №2: 503, 513, 523, 533, 543, 553, 563, 573.
Terms problems:
503. To determine the temperature and irradiance of a blackbody, if the maximum power of the emission spectrum is at the wavelength of 600 nm.
513. A photon with an energy of 10 eV knocks electrons from the silver plate. Determine the momentum gained plate, assuming that the direction of the photon and photoelectron pulses perpendicular to the wafer surface.
523. Calculate the radius of the Bohr theory of the second stationary orbit and the velocity of the electron in this orbit for the hydrogen atom.
533. Assuming that the uncertainty of the coordinates of a moving particle is equal to the de Broglie wavelength, what will be the relative uncertainty in the momentum of the particle?
543. Perpendicular to the uniform magnetic field induction equal to 0.1 T, put a thin plate of silicon impurity. The width of the plate corresponds to 4 cm. Determine the current density at which the Hall voltage reaches 0.5 V. Hall constant for silicon taken to be 0.3 m3 / Cl.
553. Find the mass defect and the binding energy of tritium (3/1) n. What percentage of the rest energy of the core is its binding energy?
563. To determine the mass of the isotope (131/53) I having an activity of 37 GBq.
573. To determine the mass flow rate of uranium-235 in a nuclear reactor nuclear power plant. The thermal power plant is 10 MW power plant efficiency is 20%. Assume that in each act of fission of uranium-235 releases energy of 200 MeV.