Q: When alternating primary current passes through coil p, it does what to the iron core? Read this paragraph and choose the correct option from the provided answers: As you can see in Figure above , a transformer consists of two wire coils wrapped around an iron core. When alternating primary current passes through coil P, it magnetizes the iron core. Because the current is alternating, the magnetic field of the iron core keeps reversing. This changing magnetic field induces alternating current in coil S, which is part of another circuit. In Figure above , coil P and coil S have the same number of turns of wire. In this case, the voltages of the primary and secondary currents are the same. However, when the two coils have different numbers of turns, the voltage of the secondary current is different than the voltage of the primary current. Both cases are illustrated in Figure below . Choices: - electrilizes it - creates it - heats it - magnetizes it A:
magnetizes it

Q: Sphenodontia sphenodontia ("wedge tooth") arose in the mesozoic era and includes only one of what? Read this paragraph and choose the correct option from the provided answers: Sphenodontia Sphenodontia ("wedge tooth") arose in the Mesozoic era and includes only one living genus, Tuatara, comprising two species that are found in New Zealand (Figure 29.26). Tuataras measure up to 80 centimeters and weigh about 1 kilogram. Although quite lizard-like in gross appearance, several unique features of the skull and jaws clearly define them and distinguish the group from the squamates. Choices: - outside genus - traveling genus - inner genus - living genus A:
living genus

Q: The limit to how much solute will dissolve in a given amount of solvent is called what? Read this paragraph and choose the correct option from the provided answers: Solubility There is usually a limit to how much solute will dissolve in a given amount of solvent. This limit is called the solubility of the solute. Some solutes have a very small solubility, while other solutes are soluble in all proportions. Table 9.2 "Solubilities of Various Solutes in Water at 25C (Except as Noted)" lists the solubilities of various solutes in water. Solubilities vary with temperature, so Table 9.2 "Solubilities of Various Solutes in Water at 25C (Except as Noted)" includes the temperature at which the solubility was determined. Table 9.2 Solubilities of Various Solutes in Water at 25C (Except as Noted). Choices: - density - potency - strength - solubility A:
solubility