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Cosmic radiation and radiation from terrestrial sources are examples of: a. Natural background radiation b. Natural man-made radiation c. Industrial sources of radiation d. Radioactive sources used in the medical field User: An example of a man-made source of radiation is: a. Terrestrial sources b. Cosmic radiation c. Diagnostic radiation d. Potassium-40 in the human body
Weegy: c. Diagnostic radiation is an example of a man-made source of radiation. User: The three factors which are important in protecting individuals from radiation are: a. Time, shielding, and dose rate b. Dose rate, time, and gender c. Time, shielding, and distance d. Distance, time, and dose rate User: Radiation received by the body over a short period is: a. Chronic exposure b. Sublethal exposure c. Acute exposure d. Supralethal exposure User: Radioactive decay is defined as: a. The decrease in the amount of any radioactive material due to the spontaneous emission of nuclear radiation from the nucleus b. The decomposition of radioactive atoms due to lengthy exposure to direct sunlight c. The gradual decrease in the number of radioactive atoms in radioactive material due to spontaneous fission d. The decline in the strength of a radioactive source due to the combined effects of time, distance, and shielding Weegy: Radioactive decay is defined as: c. The gradual decrease in the number of radioactive atoms in radioactive material due to spontaneous fission (More)
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Asked 7/9/2012 3:00:26 PM
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In every nuclear power plant that generates electricity, the following components are present: a. Heat source, steam generator, cooling tower b. Heat source, turbine electricity generator, and pump c. Turbine electricity generator, pump, cooling tower d. Pump, steam generator, cooling tower
Weegy: Answer is a. Heat source, steam generator, cooling tower User: A chain reaction results when a uranium atom is struck by a/an ______________released by a nearby Uranium atom undergoing fission. a. Electron b. Proton c. Gamma ray d. Neutron User: The three main barriers in a nuclear power plant to prevent release of fission products are the fuel rods, the reactor vessel, and the ________________________. a. Secondary coolant system b. Containment building c. Condensor d. Control rods Weegy: a. Secondary coolant system User: To prevent fuel damage, decay heat must be removed from the reactor core: a. Until the reactor shuts down b. After the reactor shuts down c. Until the primary coolant system is activated User: Control rods are used in a reactor core to: a. Absorb free neutrons b. Are a source of free neutrons which are used to cause fission c. Encase the nuclear fuel Weegy: The answer is a. Absorb free neutrons. User: In a pressurized water- reactor the primary cooling water: a. Boils in the core and is used to turn the turbine b. Evaporates to the atmosphere using a cooling tower c. Transfers its heat to the secondary cooling water in a steam generator Weegy: The answer is: c. Transfers its heat to the secondary cooling water in a steam generator. (More)
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Asked 7/9/2012 3:33:43 PM
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