PHY 102 Exam 2-with verified answers -2024-2025.docx | Exams Nursing | Docsity (2024)

Download PHY 102 Exam 2-with verified answers -2024-2025.docx and more Exams Nursing in PDF only on Docsity! PHY 102 Exam 2-with verified answers -2024-2025 1. Which process supplies the energy converted to electrical energy in a nuclear power plant? • The release of steam from underground hot springs. • The fusion of small nuclei. • The fission of large nuclei. • The combustion of natural gas. • The burning of coal. 2 An explosion occurs 3400m away. Given that sound travels at 340 m/s, how long will it take for the sound of the explosion to reach you? • less than a second • 3 seconds • 10 seconds • 100 seconds 3 When ethanol (empirical formula C2H6O) burns, it combines with oxygen and forms carbon dioxide and water. Which of the following is the balanced chemical reaction for the burning of ethanol? • C2H6O + O2 → CO2 + H2O • C2H6O + 2 O2 → 2 CO2 + 3 H2O • 2 C2H6O + 3 O2 → 4 CO2 + 6 H2O • C2H6O + 3 O2 → 2 CO2 + 3 H2O • C2H6O + 2 O2 → 2 CO2 + 2 H2O • 4. When two light nuclei fuse together, mass • Is conserved. • Is converted to energy. • Is created from energy. • Is increased. 5 Which of the following is an example of a chemical change? • An ice cube melting. • A sheet of metal being formed into a jewelry box. • A candle burning. • A window breaking. 6 Sulfur dichloride is a cherry-red liquid. Which of the following is true about sulfur dichloride? • It is a covalent molecule with one sulfur atom for each two chlorine atoms. • It is an ionic compound with one sulfur atom for each two chlorine atoms. • It is a covalent molecule with two sulfur atoms for each one chlorine atom. • element to element. • column to column. • row to row. • group to group. 13 Which of the following statements is true? • Chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. • Nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. • Both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction. • Neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. 14 What is the ultimate source of all electromagnetic waves? • Vibrating molecules • Radio antennas • Light bulbs • Vibrating charged particles • Vibrating atoms 15 Different components of blood can be separated by their densities in a centrifuge. This is because blood is: • A solution • A suspension • A compound • An element • A pure substance 16 The reason carbon dating works is that: • There is so much non-radioactive carbon dioxide in the air. • When a plant or animal dies, it stops producing oxygen. • Plants and animals are such strong emitters of carbon-14. • After a plant or animal dies, it stops taking in fresh carbon-14. 17 When two or more waves are at the same place at the same time, which phenomenon occurs? • Reflection • Refraction • Dispersion • Interference • Polarization 18 Which of the following waves is NOT an electromagnetic wave? • Light • X-rays • As a tracer in a medical test. • To determine the age of an archeological artifact. • To increase the shelf life of produce. • All of the above. 25 Which of the following is not a form of radioactivity? • Gamma rays • X-rays • Beta particles • Alpha particles 26 Which phenomenon of light explains the separation of light into colors in a rainbow? • Refraction • The Doppler effect • Polarization • Dispersion • Interference 27 Atoms consist of: • Protons and neutrons only. • Neutrons and electrons only. • Electrons only. • Protons, neutrons, and electrons. 28 In which of the following types of chemical bond is one or more electron(s) completely transferred from one atom to another? • Metallic bond • Ionic bond • Covalent • Polarized bond 29 Which of the following is an example of a solution? • The atmosphere. • • An Italian salad dressing. • Muddy water. 30 Which subatomic particle has a negative charge? • A proton • A neutron • An alpha particle • A gamma ray • An electron