(Question)
Q: Models may be physical, conceptual, or what else? Read this paragraph and choose the correct option from the provided answers: Models may be physical, conceptual, or mathematical. Choices: - experimental - fundamental - theoretical - mathematical A:
(Answer)
mathematical

(Question)
Q: Since eddy currents and magnetic damping occur only in conductors, recycling centers can use these to separate metals from other materials? Read this paragraph and choose the correct option from the provided answers: Since eddy currents and magnetic damping occur only in conductors, recycling centers can use magnets to separate metals from other materials. Trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by magnetic damping while nonmetals in the trash move on, separating from the metals. (See Figure 23.17. ) This works for all metals, not just ferromagnetic ones. A magnet can separate out the ferromagnetic materials alone by acting on stationary trash. Choices: - particles - cranes - alloys - magnets A:
(Answer)
magnets

(Question)
Q: The kidneys are a pair of bean-shaped structures that are located just below and posterior to the liver in this? Read this paragraph and choose the correct option from the provided answers: Kidneys: The Main Osmoregulatory Organ The kidneys, illustrated in Figure 41.4, are a pair of bean-shaped structures that are located just below and posterior to the liver in the peritoneal cavity. The adrenal glands sit on top of each kidney and are also called the suprarenal glands. Kidneys filter blood and purify it. All the blood in the human body is filtered many times a day by the kidneys; these organs use up almost 25 percent of the oxygen absorbed through the lungs to perform this function. Oxygen allows the kidney cells to efficiently manufacture chemical energy in the form of ATP through aerobic respiration. The filtrate coming out of the kidneys is called urine. Choices: - stomach cavity - cerebral cavity - mantle cavity - peritoneal cavity A:
(Answer)
peritoneal cavity