Nat Review Physics - 3266 Words

In an experiment, the potential and K.E. of a 10kg object were measured at different heights. Mass | Height | P.E. | K.E. | P.E. +K.E. | 10 | 2.0 | 196 | 0 | 196 | 10 | 1.0 | 98 | 98 | 196 | 10 | 0.5 | 49 | 147 | 196 | 10 | 0 | 0 | 196 | 196 | 1. Which statement BEST describes the data in the table? The total energy of an object ____ a. Increase height b. Decreases with height c. Is constant at different heights d. Is affected by the mass of the object 2. Based on the equation E=mc ² where c is the speed of light, what can be inferred on the amount of energy possessed by the object? a. The energy is directly proportional to the mass of the object. b. The energy is inversely proportional to the mass of the†¦show more content†¦a. Nuclear fusion, energy is released. b. Nuclear fission, energy is absorbed. c. Nuclear fission, energy is released. d. Nuclear fission, energy is absorbed. 16. Which of the ff. activities make use of the radioactive carbon 14 isotope? a. Generate electricity. b. Dating boulders and rocks. c. Surgical operation of tumors. d. Dating of remain of plants and animals. 17. Why is the light form a LASER device used in surgery ? a. It produces straight line. b. It has single frequency. c. It is stimulated. d. It is coherent. For # 18 amp; 19, refer to this situation below. Engr. Tolentino is tasked to inspect a newly -build Nuclear Power Plant. He observed the ff. conditions: 1. The radioactive sources are shielded with lead and concrete. 2. The nuclear reactors operate in a closed septum with low air pressure. CORRECTION NEEDED 3. The workers work far from the source of the radiation. 18. Why is it necessary to enclose the nuclear reactor at low pressure? a. To maintain the temperature at low level. b. To prevent leakage of radioactive waste. c. To keep the environment inside the power plant _____. CORRECTION NEEDED d. To prevent radiation from being inhaled by the workers. 19. Why should workers work far from the source of radiation? a. It affects production. b. It prevents the effect of radiation. c. ItShow MoreRelatedElectronic Properties Of Monolayer Tungsten Disulfide4102 Words   |  17 PagesWeiss, N. O.; Duan, X.; Cheng, H.-C.; Huang, Y.; Duan, X. Nature Reviews Materials 2016, 16042. 2. Wang, H.; Yu, L.; Lee, Y.-H.; Shi, Y.; Hsu, A.; Chin, M. L.; Li, L.-J.; Dubey, M.; Kong, J.; Palacios, T. Nano Letters 2012, 12, (9), 4674-4680. 3. Sup Choi, M.; Lee, G.-H.; Yu, Y.-J.; Lee, D.-Y.; Hwan Lee, S.; Kim, P.; Hone, J.; Jong Yoo, W. Nat Commun 2013, 4, 1624. 4. Lopez-Sanchez, O.; Lembke, D.; Kayci, M.; Radenovic, A.; Kis, A. Nat Nano 2013, 8, (7), 497-501. 5. van der Zande, A. M.; Huang, P.Read MoreCounterterrorism In Cyber Enforcement1376 Words   |  6 PagesReasoning, Figural Reasoning, Personality Assessment, Preferences and Interests, and Situational Judgement. 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