8. A relativistic particle of mass M with total energy E decays into a lighter particle of mass m together with some other undetected particles. The particle m also decays afterwards. The proper lifetime of particle M is measured to be T and the proper lifetime of particle m is t. If half of the kinetic energy of particle M has been transmitted to particle m during this process, what are the flight distances of the particle M and of the particle m, from an observer at rest?
7. Consider a "four-slit" interference experiment as shown in Figure 6. The distance between the slits is d, while the distance between the slits and the screen is D (D>>d). A coherent monochromatic light at a wavelength of λ is directed to the slits. Find the distance between the first dark fringe and the central maximum on the screen.
6. A copper rod of mass m rests on two horizontal rails with a distance d apart from each other and carries a current i from one rail to the other as shown in Figure 5. The coefficient of static friction between rod and rails is u. A uniform magnetic field B is applied to the system and puts the rod on the verge of sliding, what is the angle of magnetic field with respect to the direction of tails, if the applied magnetic field is at minimum?
100 當我們說腦中組織的“硬化(sclerosis)”時,意思是指那一種細胞增多? (A)少突神經膠細胞 (B)神經元 (C)星狀細胞 (D)小神經膠細胞
99 Alzheimer type II 星狀細胞與下列何者無關? (A) Alzheimer's disease (B)慢性肝病所引起之高血氨(hyperammonemia) (C) Wilson's disease (D)遺傳性尿素循環障礙(metabolic disorders of the urea cycle)
98 乳癌經放射治療或外科手術切除後,最可能發生的肉瘤是: (A) Angiosarcoma (B) Rhabdomyosarcoma (C) Liposarcoma (D) Leiomyosarcoma