Q: An elastic collision is one that conserves internal energy of what type? Read this paragraph and choose the correct option from the provided answers: 8.4 Elastic Collisions in One Dimension Let us consider various types of two-object collisions. These collisions are the easiest to analyze, and they illustrate many of the physical principles involved in collisions. The conservation of momentum principle is very useful here, and it can be used whenever the net external force on a system is zero. We start with the elastic collision of two objects moving along the same linea one-dimensional problem. An elastic collision is one that also conserves internal kinetic energy. Internal kinetic energy is the sum of the kinetic energies of the objects in the system. Figure 8.6 illustrates an elastic collision in which internal kinetic energy and momentum are conserved. Truly elastic collisions can only be achieved with subatomic particles, such as electrons striking nuclei. Macroscopic collisions can be very nearly, but not quite, elasticsome kinetic energy is always converted into other forms of energy such as heat transfer due to friction and sound. One macroscopic collision that is nearly elastic is that of two steel blocks on ice. Another nearly elastic collision is that between two carts with spring bumpers on an air track. Icy surfaces and air tracks are nearly frictionless, more readily allowing nearly elastic collisions on them. Elastic Collision An elastic collision is one that conserves internal kinetic energy. Internal Kinetic Energy Internal kinetic energy is the sum of the kinetic energies of the objects in the system. Choices: - thermal - seismic - potential - kinetic A:
kinetic

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Q: Integral proteins penetrate the hydrophobic interior of the what? Read this paragraph and choose the correct option from the provided answers: Choices: - metabolism bilayer - skin bilayer - carbon bilayer - lipid bilayer A:
(Answer)
lipid bilayer

Ques: Q: Which theory states that all organisms are composed of one or more cells, the cell is the basic unit of life, and new cells arise from existing cells? Read this paragraph and choose the correct option from the provided answers: CHAPTER SUMMARY 3.1 How Cells Are Studied A cell is the smallest unit of life. Most cells are so small that they cannot be viewed with the naked eye. Therefore, scientists must use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than light microscopes. The unified cell theory states that all organisms are composed of one or more cells, the cell is the basic unit of life, and new cells arise from existing cells. Choices: - theory of evolution - microcellular theory - natural selection - unified cell theory A:
Ans: unified cell theory

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Q: What is the second stage of photosynthesis? Read this paragraph and choose the correct option from the provided answers: The second stage of photosynthesis is the production of glucose from carbon dioxide. This process occurs in a continuous cycle, named after its discover, Melvin Calvin. The Calvin cycle uses CO 2 and the energy temporarily stored in ATP and NADPH to make the sugar glucose. Choices: - pigment release - production of protein - glucose destruction - production of glucose A:
(A).
production of glucose

Ques:Q: What is the term for a technique used to separate out homogeneous mixtures in which one or more solids are dissolved in a liquid? Read this paragraph and choose the correct option from the provided answers: Evaporation is a technique used to separate out homogeneous mixtures in which one or more solids are dissolved in a liquid. Typically, the mixture is heated until all of the liquid has vaporized, leaving behind the dissolved solids ( Figure below ). The vapor can also be captured and recondensed into a liquid if desired. Choices: - transpiration - absorption - distillation - evaporation A:

Ans:evaporation

Question: Q: In which sphere of the atmosphere do the northern and southern lights occur? Read this paragraph and choose the correct option from the provided answers: The thermosphere is the layer above the mesosphere. Temperature increases with altitude in this layer. The northern and southern lights occur here. Choices: - lithosphere - stratosphere - ionosphere - thermosphere A:
Answer:
thermosphere