所屬科目：教甄◆物理科專業
1. 人工智慧當中討論物理規律的形成過程，請問以下針對數據點進行的擬合曲 線，何者可能較為接近科學專家判斷? 為什麼?
13. The Feynman diagram below represents a β - decay via the weak interaction process. Time is shown as upwards. The wiggly line represents a virtual exchange particle. State what is meant by virtual exchange particle.
14. The two point sources A and B emit light of the same frequency. The light is incident on a rectangular narrow slit and, after passing through the slit, is brought to a focus on the screen. B is covered. Sketch a graph to show how the intensity I of the light from A varies with distance along the screen. Label the curve you have drawn A.
15. This question is about an ideal gas. The graph shows how the pressure P of a sample of fixed mass of an ideal gas varies with volume V. The temperature of the gas at point A is 85 °C. The gas can change its state to that of point C either along route ABC or route ADC. Compare, without any calculation, the work done and the thermal energy supplied along route ABC and route ADC.
16. There is a proposal to power a space satellite X as it orbits the Earth. In this model, X is connected by an electronically-conducting cable to another smaller satellite Y. Satellite X must release ions into the space between the satellites. Explain why the current in the cable will become zero unless there is a method for transferring charge from X to Y.
17. Two cells of negligible internal resistance are connected in a circuit. The top cell has electromotive force (emf) 12V. The emf of the lower cell is unknown. The ideal ammeter reads zero current. Calculate the emf E of the lower cell.
18. A beam of electrons each of de Broglie wavelength m is incident on a thin film of silicon-30. The variation in the electron intensity of the beam with scattering angle is shown below. Use the graph to show that the nuclear radius of silicon-30 is about 4 fm.
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m is incident on a thin film of silicon-30
. The variation in the electron intensity of the beam with scattering angle is shown below. Use the graph to show that the nuclear radius of silicon-30 is about 4 fm.