Asian Physics Olympiad: 1st-8th, Problems and Solutions by Zheng Yongling

By Zheng Yongling

This ebook compiles all the attempt difficulties and strategies from the first throughout the eighth Asian Physics Olympiad. try out questions of each paper include components, a idea part and an scan part, ahead of which mins of groups and result of each one festival are brought. it's a quite fascinating reference ebook for either scholars and lecturers of overseas pageant education in addition to center university pupil contestants.

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Additional resources for Asian Physics Olympiad: 1st-8th, Problems and Solutions

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A plot of In I~ versus temperature T is shown in Fig. 2 - 5. 6 ~ -........ 8 50 100 150 200 250 ~ 300 i........ 2 - 5. Assume the total energy of an atom vibrating in the direction of the surface normal x is given by kET, where kE is the Boltzmann constant. (a) Calculate the frequency of vibration in the direction of the surface normal for the surface atoms. (b) Calculate the root-mean-square displacement, i. e. the value of « u~ >) -t , in the direction of the surface normal for the surface atoms at 300 K.

B) Measure the short-circuit current, Ise. (c) Measure the open-circuit voltage, Voe. (d) Measure the I vs. V relationship of the solar cell with varying load resistance and plot the I - V curve. (e) Determine the maximum output power of the solar cell. (0 Determine the load resistance for the maximum output power. (g) Calculate the filling factor, FF = v. IP sc oc (3) Assume that the solar cell can be modeled as a device consisting of an ideal current source (light-generated current source), an ideal diode, a shunt resistance R sh ' and a series resistance R, .

Ii) The orbit of the Moon about the Earth is circular. (iii) The axis of rotation of the Earth is perpendicular to the orbital plane of the Moon. (iv) If the Moon is absent and the Earth does not rotate, then the mass distribution of the Earth is spherically symmetric and the radius of the Earth is R E • 30 Asian Physics Olympiad Problems and Solutions (v) For the Earth or the Moon, the moment of inertia I about any axis passing through its center is that of a uniform sphere of mass M and radius .

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