Ques: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:

Ans:kinetic
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Ques:Q: How do plants obtain their energy? Read this paragraph and choose the correct option from the provided answers: Seaweed is actually a plant-like protist, which are also known as algae. The green color is due to what pigment? Algae, like plants, obtain their energy through photosynthesis. Choices: - glycolysis - Sugar Transfer - HETEROTROPHS - photosynthesis A:

Ans:photosynthesis
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Ques:Q: Hazardous waste is material that is toxic, chemically active, corrosive, or what? Read this paragraph and choose the correct option from the provided answers: Hazardous waste is material that is toxic, chemically active, corrosive, or flammable. Choices: - inactive - decomposed - organic - flammable A:

Ans:flammable
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Ques:Q: What can protons and neutrons be broken down into? Read this paragraph and choose the correct option from the provided answers: Today, scientists think that electrons truly are fundamental particles that cannot be broken down into smaller, simpler particles. They are a type of fundamental particles called leptons. Protons and neutrons, on the other hand, are no longer thought to be fundamental particles. Instead, they are now thought to consist of smaller, simpler particles of matter called quarks. Scientists theorize that leptons and quarks are held together by yet another type of fundamental particles called bosons. All three types of fundamental particlesleptons, quarks, and bosonsare described below. The following Figure below shows the variety of particles of each type. Choices: - molecules - strings - ions - quarks A:

Ans:
quarks
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