Answer the following question given this paragraph: Polymers are long molecules composed of chains of units called monomers. Q: What long molecules are composed of chains of units called monomers? Choices: - complexes - microbes - drummers - polymers A:
polymers
Answer the following question given this paragraph: 22.6 The Hall Effect We have seen effects of a magnetic field on free-moving charges. The magnetic field also affects charges moving in a conductor. One result is the Hall effect, which has important implications and applications. Figure 22.27 shows what happens to charges moving through a conductor in a magnetic field. The field is perpendicular to the electron drift velocity and to the width of the conductor. Note that conventional current is to the right in both parts of the figure. In part (a), electrons carry the current and move to the left. In part (b), positive charges carry the current and move to the right. Moving electrons feel a magnetic force toward one side of the conductor, leaving a net positive charge on the other side. This separation of charge creates a voltage , known as the Hall emf, across the conductor. The creation of a voltage across a current-carrying conductor by a magnetic field is known as the Hall effect, after Edwin Hall, the American physicist who discovered it in 1879. Q: The creation of a voltage across a current-carrying conductor by a magnetic field is known as what? Choices: - off effect - newton effect - show effect - hall effect A:
hall effect
Q: Answer the following question given this paragraph: Anaerobic prokaryotes live in habitats without oxygen. Q: What type of prokaryotes live in habitats without oxygen? Choices: - phosphoric - aerobic - enzymatic - anaerobic A:
A: anaerobic
Question: Answer the following question given this paragraph: 6. Aging is associated with the death of cells. Give two reasons why cells die. Q: What natural process is associated with the death of cells? Choices: - reducing - dissolving - cooling - aging A:
Answer: aging
*Question*
Answer the following question given this paragraph: So does the magnetic force cause circular motion? Magnetic force is always perpendicular to velocity, so that it does no work on the charged particle. The particle's kinetic energy and speed thus remain constant. The direction of motion is affected, but not the speed. This is typical of uniform circular motion. The simplest case occurs when a charged particle moves perpendicular to a uniform B -field, such as shown in Figure 22.20. (If this takes place in a vacuum, the magnetic field is the dominant factor determining the motion. ) Here, the magnetic force supplies the centripetal force F c = mv 2 / r . Noting that sin = 1 , we see that. Q: Magnetic force is always perpendicular to what? Choices: - speed - sunlight - length - velocity A:
**Answer**
velocity
Q: Answer the following question given this paragraph: Cells make up all living things, including your own body. This picture shows a typical group of cells. But not all cells look alike. Cells can differ in shape and sizes. And the different shapes usually means different functions. Q: What small biological structures make up all living things, including the human body? Choices: - proteins - scales - lipids - cells A:
A: cells