HRISTEV, Anatolie – Probleme rezolvate de HRISTEV, (mărime fișier: 2,55 MB. Category:Probleme de Fizica pentru licee, bacalaureat si admitere in facultati: Mecanica, Autor: Anatolie Hristev. Lucrarea contine probleme de fizica din fizica . Klasse. Authors, Anatolie Hristev, Vasile Fälie, Dumitru Manda. Publisher, Editura Didactica si Pedagogica, Export Citation, BiBTeX EndNote RefMan.
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The Physics Olympiad program follows the following 5 stages. Exam Pattern and Structure. NSEP is an examination of 2 hours. Anatolif student may appear for more than one subject in NSEP provided the examination schedule allows it. For this you would have to check the examination schedule pertaining to different subjects. It is entirely a student’s responsibility to ensure that the eligibility criteria are satisfied before he or she applies for the exam. In case at any stage of the programme it is anxtolie that the student does not satisfy the eligibility criteria, thenhe or she may be disqualified from the programme.
In such a way NSEP syllabus will automatically get covered. Each question with one or more than one options can be right. To get credit, no incorrect option or options should be marked and all correct option or anatolke must be marked. All the questions carry equal marks.
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However, this has to be checked with IAPT. The aim of the first stage examination is to have a wide range, then to progressively increase this reach,then to attain nationwide representation for stage II without overly compromising on merit or quality.
Thus the selection to the stage II examinations i. Hence, in the event of a tie at the last position in the list, all students with the same marks at this position will qualify to appear for the Stage Anatilie examinations. However, the selected students must nevertheless satisfy the eligibility clause laid out above. Notwithstanding the proportional representation clause as explained above, the number of students selected for INO from each State and UT must be at least 1, provided that the eligibility clause is satisfied thoroughly.
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Given the eligibility clause as stated above, it is conceivable that students may not qualify for Stage II in a subject. In a case like this, the shortfall less from will be selected based purely on merit without further consideration to proportional representation and minimum representation clauses.
Thus in the event of a tie at the last position in the list all students with the same marks at this position will qualify to appear for the Stage II examination. They may be allowed on special request to the National Coordinator for the respective subjects, to directly appear for the second stage i. The INPhO duration is of 3 hours. But, the syllabus of higher secondary school is only a broad guideline. Here the problems and questions in National Physics Olympiad are usually non-conventional and of really high difficulty level, just as comparable to International Physics Olympiad.
Elastic forces, the law of gravitation, frictional forces, potential energy, work in a gravitational field. Motion of rigid bodies, translation, angular velocity,rotation, angular acceleration, and conservation of angular momentum. External and internal forces, equation of motion of a rigid body around the fixed axis, kinetic energy of a rotating body, moment of inertia. No specific questions will be set on this but students would be expected to know the elementary concepts of pressure, the continuity law and buoyancy.
Model of a perfect gas, pressure and molecular kinetic energy, equation of state of a perfect gas, Avogadro’s number,absolute temperature.
Also molecular approach to such simple phenomena in liquids and solids as boiling and melting etc. The Carnot cycle, reversible and irreversible processes, thermodynamic efficiency, entropy statistical approach and Boltzmann factor.
Harmonic waves, transverse and longitudinal waves,propagation of waves, linear polarization, sound waves, the classical Doppler effect. Displacement in a progressive wave and understanding of graphical representation of the wave, Doppler effect in one dimension only, measurements of velocity of sound and light, propagation of waves in homogeneous and isotropic media, Fermat’s principlereflection and refraction.
Fourier analysis is not required but candidates should have some understanding that complex waves can be made from addition of simple sinusoidal waves of different frequencies. Gauss’ law confined to simple symmetric systems like sphere, plate,cylinder etc. Current, resistance, Ohm’s law, internal resistance of source, Kirchhoff’s laws, Joule’s law,work and power of direct and alternating currents.
Law of electromagnetic induction, Lenz’s law, magnetic flux, self-induction, energy density of magnetic field, inductance, permeability. Alternating current, voltage and current series and parallel resonances, resistors, inductors and capacitors in AC-circuits.
Simple AC-circuits, final formulae for parameters of concrete resonance circuits, time constantsare not required. Wave optics, diffraction grating, diffraction from one and two slits,Bragg reflection, resolving power of a grating. Energy levels of atoms and molecules qualitativelyabsorption,spectrum of hydrogen like atomsemission.
Energy levels of nuclei qualitatively alpha- beta-gamma-decays, half-life and exponential decay,absorption of radiation, components of nuclei, nuclear reactions, mass defect. Many titles are in international languages for which English translations are available. International Physics Olympiadsvol. Problems and Solutions from Peachey – John P. Megjunadodni Olimpijadi po FizikaViktor Urumov. Angell – Olympiad finalists: DearPreparing for entrance exams?
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Part A marks. Each question with only one of the four options is correct. Part B 60 marks. Foundation of kinematics of a point mass. Vector description of the position of the point mass and velocity and acceleration as vectors.
Newton’s laws and inertial systems. Problems may be set on changing mass. Closed and open systems; momentum and hristdv, powerwork. Conservation of energy, impulse, conservation of linear momentum. Centripetal acceleration, Kepler’s laws.
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Mechanics of rigid bodies. Statics, torque, centre of mass. Couples; conditions of equilibrium of bodies. Conservation of angular momentum about fixed axis only. Parallel axes theorem Steiner’s theorem and additively of the moment of inertia. Accelerated reference systems and inertial forces. Knowledge of the Coriolis force formula is not required. Thermodynamics and molecular physics.
Internal energy, first and second laws of thermodynamics, work and heat. Thermal equilibrium and quantities depending on state and quantities depending on process. Work done by an expanding gas limited to isothermal and adiabatic processes.
Proof of the equation of the adiabatic process is not required. Entropy as a path independent function, quasistatic processes, entropy changes and reversibility.
Harmonic oscillations and equation of harmonic oscillation. Solution of the equation for harmonic motion; attenuation and resonance – qualitatively. Superposition of harmonic waves, interference, coherent waves, standing waves, beats.
Realization znatolie intensity of wave is proportional to the square of its amplitude. Interference due to thin films and other simple systems the final formulas are not required. Electric charge and electric field. Conservation of charge, Coulomb’s law. Electric field, Gauss’ law,potential. Capacitors and capacitance, dielectric constant and energy density of electric field.
Current and Magnetic field. Simple cases of circuits containing non-ohmic devices with known V-I characteristics. Magnetic field B of a current, Lorentz force, current in a magnetic field.
Particles in a magnetic field, magnetic dipole moment, simple applications like anatoli. Magnetic field of simple symmetric systems like circular loop, anatolje wire, and long solenoid. Oscillatory circuit, generation by feedback and resonance, frequency of oscillations. Dispersion and diffraction spectra and line spectra of gases. Electromagnetic waves as transverse waves, polarizers, polarization by reflection.
Superposition of polarized waves. Resolving power of imaging systems.