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Recent reports discussing the population bomb A one kiloton nuclear weapon exploded at ground level would destroy For an atomic bomb the number of doublings required is closest to An implosion type bomb is required for Moores law relates to The statement the Chernobyl accident will kill 24 000 people is based on A moderator is something that The dangerous radioactivity in fallout comes from Fallout is much worse if the bomb A nuclear reactor cannot explode like a nuclear bomb because According to the text the least bad place to put nuclear waste is A breeder reactor is designed to produce The number of nuclear weapons that the US had was closest to Which of the following does not represent exponential growth a spread of smallpox b a computer virus c illness from anthrax d epidemic of flu The Hiroshima bomb used If the water moderator is lost from a nuclear reactor The material that might be reprocessed from nuclear waste is Which of the following is not a good example of the doubling law The Canadian Candu reactors use Plutonium can explode with fewer generations than can uranium because In a nuclear power plant the material that runs through the turbine is The number of deaths from the Nagasaki bomb is estimated to be Indicate that the explosion is slowing About 1 sq kilometer of a city 80 A Pu 239 bomb Computer chip capability The linear hypothesis Slows neutrons Fission fragments Is exploded near the ground The nuclear reactor depends on the slow neutrons Underground Plutonium 10 000 Illness from anthrax A gun design Radiation from fission fragments will continue to produce heat Pu 239 Future population growth deuterium Plutonium fission releases more neutrons steam 50 000 to 150 000 Current is measured by A volt is a measure of Magnetism comes from In a permanent magnet the magnetism comes from Magnetic monopoles Rail guns push the projectile using Telsa wanted to use a transformer to distribute electricity because You can demagnetize a natural magnet What discovery now allows for headphones to be small and light Which of the following use or consist of permanent magnets Theoretically the Earth should not have a permanent magnet in its core because The Earths magnetism comes from The Earth flips its magnetism on average approximately The north geographic pole of the Earth Compasses point north because Electricity will heat a wire if it has Static electricity occurs when two surfaces rub against each other and Europe uses higher voltage in homes because it Lights and TVs in Europe tend to flicker because Europe uses When an object loses some electrons it To get a spark you normally need A fuse is used in a house to prevent The Earths magnetic flips are used Amps Energy per electron Moving electric charge The spin of electrons Have never been found Magnetic fields It decreased the current going through long wires to reduce the loss of electricity By heating it above its Curie point Rare earth magnets such as samarium cobalt Transformers The interior is too hot Iron in the crust Twice every million years Is the south magnetic pole There are electric currents in the iron core of the earth High current Electrons flow from one to the other Creates less heat in home wiring 50 hertz the us uses 60 hertz Has a positive charge High voltage House wires from overheating Geologic dating Can move freely Current Liquid helium Dynamo for In a metal electons The aspect of electricity that would make it most dangerous is high A certain kind of generator uses its own electricity to strengthen its magnetic field Such a generator is called a The original superconductors were cooled with Room temperature superconductors High temperature superconductors operate at approximately We use AC instead of DC because Topsy was executed with AC Edison wanted The current through a flashlight bulb is A stereo speaker produces sound by the force The light from an ordinary light bulb comes from the fact that A Tesla coil is a kind of Transformer Submarines can be detected by their Magnetism At the Curie temperature Most electric power is generated by What invention made it possible to change low voltage AC to high voltage AC To reduce losses from resistance electric power lines use An example of a transformer is Better motors and earphones have recently been made possible by Very high voltage A Tesla coil Stronger magnets Have no practical applications 123 C liquid nitrogen temperature AC can use transformers To show the dangers of high voltage A power plant on every block About one amp Of a magnetic field on an electric charge The wire is heated by electricity Magnetism disappears A wire moving through a magnetic field A transformer Beats measure Waves tend to bend in to the side The difference between two frequencies With slower wave velocity The fastest earthquake wave is the The slowest earthquake wave is the An octave refers to the two frequencies that differ by a factor of When two different waves pass through an opening of the same size which one will spread more The fastest sound wave is You can measure the distance to the epicenter by measuring Sound travels fastest in When an opening gets smaller a wave that passes through it The very center of the earth is Which kind of earthquake wave is purely longitudinal Which of the following statements about earthquake is true The L wave is often the most damaging because An earthquake wave does its worst damage when it reaches an area that Landfill is dangerous because When there is an atmospheric inversion sound tends to The ocean sound channel Sound tends to bend toward the side with The same note is played on two pianos Beats are heard once per second From this we deduce that We know that the inner part of the Earth is liquid because A magnitude 9 earthquake compared to a magnitude 8 earthquake You feel the tremors of an earthquake Ten seconds later you feel another shaking The distance to P wave L wave 2 Larger wavelength rock Spreads more Solid iron P wave They all travel at the same speed The time between the P and S waves P waves are the fastest and L waves cause the most destruction it stays on the surface so doesn t spread out very much Slows it down The amplitude of the earthquake increases Become focused Is very quiet Colder air At least one of the pianos is out of tune the notes are at the wrong frequency No S waves move across it Has 10 to 30 times the energy 50 miles the epicenter is about If we double the frequency of sound the wavelength is


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