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October 24, 2014

Search: physics-nuclear reactors

Number of results: 57,639

Japan's Nuclear Crisis
I don't know why. Please help me. Why did the reactors at the Fukushima plant overheat? Because of Nuclear power generation?
April 19, 2011 by Anonymous

science
should we produce more nuclear reactors or less of them?
December 5, 2011 by kim

Organic and Nuclear Chemistry
Regarding nuclear reactions that release a great deal of energy, which statement is true? A. In a fission chain reaction, a uranium nucleus struck by a high-energy neutron emits two neutrons. B. Nuclear fission releases more energy per unit mass than does a fusion reaction. C...
June 25, 2010 by Demi

Physics Ques.
In nuclear reactors, subatomic particles called neutrons are slowed down by allowing them to collide with the atoms of a moderator material, such as carbon atoms, which are 12 times as massive as neutrons. If the neutron has an initial speed of 1.0◊107 m/s, what will be its ...
May 8, 2011 by Brian

AP Environmental Science (URGENT)
Strontium-90 is a radioactive waste product from nuclear reactors. It has a half-life of 29 years. How many years will it take for a quantity of strontium-90 to decay to 1/16 (one-sixteenth) of its original mass?
January 11, 2012 by Heather

physics-nuclear reactors
a) Let's assume a nuclear reactor was a completely isolated system, such that no matter particles can escape from it and the only thing that can get out is energy in the form of heat and radiation. If we weigh the whole reactor before switching it on, and again after it has ...
May 8, 2011 by anonymous

Science
Which statement is true regarding nuclear energy? (Points : 1) Since 2005, global private investments in nuclear energy totaled $100 million dollars. Nuclear plants cost 2-3 times as much as new windpower to build. Nuclear energy currently produces 50% of the U.S.ís energy ...
November 11, 2013 by Anonymous

LIB
The International Atomic Energy Agency (IAEA) 1. controls nuclear weapons stockpiles. 2. inspects nuclear power plants. 3. tests nuclear weapons. 4. builds nuclear power stations. I think it's number 4
May 10, 2010 by tammy

Science
What is a nuclear membrane This is a biology question, not nuclear physics. You will find a definition at http://www.answers.com/topic/nuclear-envelope
September 18, 2006 by John

Math
Cooling towers for nuclear reactors are often constructed as hyperboloids of one sheet because of the structural stability of that surface. Suppose all horizontal cross sections are circular, with a minimum radius of 200 feet occurring at a height of 600 feet. The tower is to ...
March 12, 2009 by Vanna

Physics
I posted this earlier and no one responded so I am going to try again. I have to Distinguish between atomic physics and nuclear physics, so here is what i have. which deals with the atom as a system of electron(s) and a nucleus and nuclear phys
November 13, 2007 by Amanda

Physics
Do today's nuclear power plants use nuclear fission, fusion, or both?
April 25, 2008 by Lee

Physics
Could someone help me to say this better? I have to Distinguish between atomic physics and nuclear physics, so here is what i have. which deals with the atom as a system of electron(s) and a nucleus and nuclear physics, which considers atomic nuclei alone
November 10, 2007 by Amanda

Physics check
Today's nuclear power plants use nuclear..... to generate electricity. fission?
April 25, 2008 by Emily

nuclear physics
An atom of Radium-228 transmutes to radon-222. Write the nuclear equation for this decay.... How ??
May 28, 2012 by Garth

physics
Neon-20 has a nuclear mass of 19.992439 amu. the total nuclear binding energy for Ne-20 is? (Mprotons=1.6726x10^-27 kg) (Mneutron=1.6749x10^-27kg)
September 23, 2013 by sam

Chemistry
1. What is the change in atomic mass number when an atom emits an alpha particle? decreases by 2 *decreases by 4 increases by 2 increases by 4 2. If an isotope decays by the process of beta emission, ____. the mass number changes *the atomic number changes protons are given ...
May 1, 2013 by Anonymous

Physical Science
Hello, Can soeone tell me if I have the correct answer? Thank You, My answer- A In a nuclear reaction energy is released by the combination of two elements into a new element. This process is an example of- A. Nuclear Fusion B. Nuclear Fission
March 7, 2008 by Mandi

Geography
1-What is a benefit of nuclear power? 2-How does nuclear compare to coal? 3-What are some problems with nuclear power? 4-What does rector do? 5-What does a generator do? 6-What is the waste of these power stations, what is the problme with it? 7-What must be considered when ...
February 6, 2008 by Dicle

Biology
In what part of mitosis does the nuclear membrane disappear? My book says that in prometaphase, "the nuclear membrane fragments", but when I looked online to verify this, I found some sources that said that nuclear membrane disappears in prophase, and some sources that said ...
December 30, 2007 by Jessie

chemistry
Which of the following statements are true? Fusion reactions result in nuclei with higher Z. To keep a nuclear power plant going, a chain reaction must be maintained. Nuclear fusion produces no long-lived radioactive by-products. The Sun is a nuclear fusion reactor.
April 14, 2011 by Grace

Socials
Why did the reactors at the Fukushima plant overheat?
April 19, 2011 by Anonymous

chemistry
Any help with the following questions would be greatly appreciated! 1) What is the fuel source in nuclear power plants? How is that energy harvested from the source? 2) How does the fuel source used in power plants differ from the fuel source used in nuclear bombs? 3) What ...
December 19, 2006 by Tychicus

physics
Are the nuclear fission power plants operating around the world today safe? How does the radiation from a nuclear power plant compare to other sources of radiation?
September 16, 2010 by Anonymous

Physics
Before a nuclear reaction, there is 0.01000 kg of uranium. After the nuclear reaction, there is 0.00950 kg of uranium. How much energy was released? (h = 6.63 ◊ 1034 Js)
June 1, 2012 by Pat

Chemistry
Atom-Particle that cannont be divided in half becasue it is in its smallest form. Reactants-Substances that exist before the reaction begins. Endothermic Reaction-take in, or absorb heat energy. Exothermic Reaction- Release Heat energy Inhibitor-makes a reaction slower. Rate ...
October 8, 2007 by Tom

Japan's Nuclear Crisis
How does nuclear fission create energy? Nuclear energy is produced through the splitting, or fission, of a uranium atom in the core of a nuclear reactor. When hit by a neutron, the atom divides and releases two other neutrons, as well as heat and radioactive particles. The ...
April 19, 2011 by Anonymous

Nuclear FIssion
How does nuclear fission create energy? Nuclear energy is produced through the splitting, or fission, of a uranium atom in the core of a nuclear reactor. When hit by a neutron, the atom divides and releases two other neutrons, as well as heat and radioactive particles. The ...
April 19, 2011 by Anonymous

physical edu
Catecholamines are stress hormones which are especially prevalent in Hot Reactors. is it False
June 14, 2012 by Andy

Science
Which compound causes the depletion of Earth's ozone layer? A. ultraviolet radiation B. chlorofluorocarbon C. carbon dioxide D. sulfuric acid B How does a nuclear power plant produce energy? A. through solar panels B. through nuclear fission reactions C. through geothermal ...
January 10, 2014 by Anonymous

Science
what device in a nuclear power plant creates nuclear energy?
February 5, 2013 by Anonymous

chemistry 1405
how to write a nuclear equation for the nuclear decay of Ra-226 to an isotope of radon-222
September 25, 2013 by anna

socials
for other event in 1960 i draw nuclear weapons and write beside as caption that many people thought nuclear war amounted to global suicide. or i write instead that Canada accept U.S Bomarc missiles that capable of carrying nuclear warheads and many people not like this ...
December 6, 2011 by Mohammad

research paper
Does anyone know what arguments could come from nuclear energy? An argument for nuclear energy is that it is more efficient than coal or gas for generating electricity. There are more reasons in favor of it, of course. An argument against it is the question of what do we do ...
January 30, 2007 by sam

science
_____ contain a fuel, rods to control nuclear reactions, and a cooling system. Would Nuclear reactor work??
September 19, 2010 by Katie

Chemistry
The most abundant isotope of uranium,238U , does not undergo fission. In a breeder reactor, however, a 238U atom captures a neutron and emits two beta particles to make a fissionable isotope of plutonium, which can then be used as fuel in a nuclear reactor.Write the balanced ...
November 28, 2012 by Anonymous

physics
By considering the nergy time uncertainity principle, estimate the range of the weak nuclear interaction at low energies. compare this range to the size of a typical nucleon for exapme a proton and therefore explain why the weak nuclear interaction between individual nucleaons...
September 25, 2011 by shumaila

Chemistry
Which of the following statements are true? Fusion reactions result in nuclei with higher Z. To keep a nuclear power plant going, a chain reaction must be maintained. Nuclear fusion produces no long-lived radioactive by-products. The Sun is a nuclear fusion reactor. I tried ...
April 19, 2011 by Sue

nuclear chemistry
A typical nuclear reactor produces 1mw of power per day. What is the minimum rate of mass loss required to produce this energy. Don't know where to start
November 10, 2012 by Nancy

Chemistry
Describe nuclear fission and write a nuclear equation to describe the fission of U-235? Uranium-235 undergoes neutron-Induced fission to produce Xe-144 and Sr-90. Write a nuclear equation for the reaction. How many neutrons are produced?
November 10, 2012 by Nomi

Chemistry (PLEASE HELP)
Which of the following statements are true? Fusion reactions result in nuclei with higher Z. To keep a nuclear power plant going, a chain reaction must be maintained. Nuclear fusion produces no long-lived radioactive by-products. The Sun is a nuclear fusion reactor. I tried ...
April 19, 2011 by Jamie

Physics
Nuclear fusion reaction will occur in a gas duetorium hydrogen nuclei when a nuclei has an average kinetic energy of atleast 0.72MeV. What is the temperature required for nuclear fusion to occur with duetorium hydrogen? (take boltmann constant k = 1.38 x 10^23 j/k)
November 13, 2013 by Adigun

Physics
Nuclear fusion reaction will occur in a gas duetorium hydrogen nuclei when a nuclei has an average kinetic energy of atleast 0.72MeV. What is the temperature required for nuclear fusion to occur with duetorium hydrogen? (take boltmann constant k = 1.38 x 10^23 j/k)
November 13, 2013 by Adigun

soc 207
. The nuclear industry is placing ads in popular magazines and newspapers, claiming that nuclear power is environmentally friendly, since it doesnít contribute to the greenhouse effect. How do you respond to that claim?
July 10, 2011 by tamika

chemistry
name the type of nuclear reaction and name the nuclear symbol that is missing: 27Al13 + ? yields 30P15 + 1n0
January 18, 2010 by mary

physic
In a serious accident, a nuclear power plant's reactor vessel cracks, and all of the cooling water drains out. Although nuclear fission stops, radioactive decay continues to heat
May 6, 2014 by joseph

chemistry
Mass is lost or gains in a.) all chemical reactions b.) all nuclear fission reactions c.) all nuclear fusion reactions d.) all chemical and nuclear reactions my guess is B
May 20, 2012 by ben

Chemistry
27. Excess exposure to nuclear radiation can cause harm. All of the following statements about radiation are true EXCEPT A. Radiation can damage living tissue because of the high energy associated with the radiation. B. Radiation can damage biological molecules by knocking an ...
June 8, 2014 by Emily

Geography (Ms. Sue)
1). Why were world leaders concerned about the security of nuclear weapons in Russia and the Republics after 1991? A: World leaders were concerned about security of nuclear weapons in Russia and the Republics after 1991 because the Soviet Union, which had once controlled those...
October 11, 2013 by Anonymous

chemistry help!!
For each of the following pairs, indicate which element has the larger first ionization energy Mg or Al. i put Mg. Repulsion of paired electrons in Mg is more significant than Al's higher effective nuclear charge. but got it wrong. Al. Repulsion of paired electrons in Al is ...
November 20, 2012 by Samantha

chemistry
One way in which atomic nuclear decay takes place?What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
August 30, 2011 by Boricua

Biology
I am doing an essay about the nuclear envelope. However, I can't find very good information about the function of this organelle. For example, how does the nuclear envelope protect the nucleus?
March 17, 2008 by Natalia

Chemistry
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
March 30, 2010 by Marlene

Chemistry
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
March 30, 2010 by Marlene

chemistry
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
May 1, 2010 by JanetJ

chemistry
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
July 25, 2010 by Art

chemistry
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
June 18, 2011 by Jessica

u.s.history
Why did the soviet union feel that it was necessary to place nuclear missile in cuba? In what Asian country did the u.s. place nuclear weapons that could fire on western Russia? What waas the significance of the u-2 flight? Why did Kennedy issue a quarantine instead of a ...
April 8, 2008 by kevin

college chemistry
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
December 8, 2010 by jane

Chemistry
Arrange the following atoms in order of increasing effective nuclear charge experienced by the electrons in the n = 3 electron shell: K,Mg,P,Rh,and Ti. I think that the effective nuclear charge increases as you go up a group and across a period. so Rh, K, Ti, Mg, P?
October 26, 2010 by Don

Chemistry
Arrange the following atoms in order of increasing effective nuclear charge experienced by the electrons in the n = 3 electron shell: K,Mg,P,Rh,and Ti. I think that the effective nuclear charge increases as you go up a group and across a period. so Rh, K, Ti, Mg, P?
October 26, 2010 by Don

science
What universal force is primarily responsible for keeping satellite in orbit around earth? Answers are electromagnetic force, strong nuclear force, gravitational force, weak nuclear force. Thank you
March 3, 2014 by snow

physics
what has more predictable behavior, a proton or an electron, and why? a. an electron because of its smaller mass b. a proton because of its larger mass c. an electron because it doesn't feel the nuclear force d. a proton because it doesn't feel the nuclear force e. an electron...
April 14, 2009 by Jess

physics
how do types of nuclear radiation differ in electric charge?
February 8, 2011 by makayla

History
What defense strategy was developed by the late 1940s because the US lacked sufficient troops to confront the Soviet Army in Eastern Europe? I think that the answer might be= B) nuclear deterrence, is this correct? A) atomic detente B) nuclear deterrence C) a combined NATO ...
March 23, 2011 by David

Geography (Ms. Sue)
What are the harmful effects of nuclear testing? A: Nuclear testing causes widespread health problems. Such conditions include dangerous levels of radiation exposure which causes dramatic increases in the rates of leukemia, thyroid cancer, birth defects, and metal illness.
October 10, 2013 by Anonymous

physics
if The magnitude of the nuclear spinangular momentum of a nuclei is 15 /2 units. Then what will be the value of I
May 20, 2013 by kuldeep

physics
if The magnitude of the nuclear spinangular momentum of a nuclei is 15 /2 units. Then what will be the value of I
May 20, 2013 by kuldeep

physics
Complete the following nuclear reaction: ^16,v8 O + ^4, v2 He → ________ + ^19, v10 Ne 1p 1n 2H 3H
March 17, 2014 by Anonymous

Prime Minister
If you were Prime Minister Stephen Harper, what position would you take on the issue of nuclear power generation in Canada? I would just stop, and end the nuclear generations. It's better than dealing with risks, and entering the zone of danger. I need help. I dont really get ...
April 19, 2011 by Anonymous

chemistry
Describe what happens in a fission reaction. What is a commonly used isotope in a nuclear fission reactor? Describe how a fission nuclear reactor power plant works.
May 30, 2013 by holly

Chemistry-PLEASE HELP!!!
Give a full balanced nuclear equation fro the synthesis of xenon-133. A full balanced nuclear equation includes α particles, β particles, positrons and gamma rays.
April 17, 2009 by Matt

Physical Science
In which of these processes is an element of matter changes into a completely different element.....nuclear fusion, nuclear fission, neither, or both? Please note that we don't do students' homework for them. Once YOU have attempted to come up with a response to each of YOUR ...
March 29, 2007 by Gina

college physics
In a nuclear reactor, neutrons released by nuclear fission must be slowed down before they can trigger additional reactions in other nuclei. To see what sort of material is most effective in slowing (or moderating) a neutron, calculate the ratio of a neutron's final kinetic ...
March 18, 2010 by Kyle

Physics check
The two quantities conserved in all nuclear equations are....... mass and number?
April 17, 2008 by Bev

AP Physics
Two radioactive isotopes are extracted from spent nuclear fuel and placed in a metal container, which is then sealed and deposited in a nuclear waste disposal facility. The graph above shows how many nuclei of isotopes 1 and 2 remain as a function of time. 1) What type of ...
March 9, 2011 by Amanda.

PHYSICS
Give at least one example of an application of each branch: motion properties of materials sound light electricity magnetism properties of atoms nuclear physics Dont understand this.
September 7, 2011 by Anonymous

history
i think its rite is it? 13.) . The visit of an influential nuclear physicist to a population symposium in 1979 led to A. the two-child policy in China. B. the election of Deng Xiaoping in China. C. new nuclear-power safety measures in populated areas in China. >>>D. ...
November 15, 2011 by man

Chemistry
Write a nuclear equation for the following: Iodine 131 undergoes beta decay two times Plutonium 239 is an alpha emitter Th 234 undergoes beta decay once and then alpha decay How do I go about writing nuclear equations?
December 6, 2010 by Jake

JAPAN
For what reasons are you in favour of using nuclear energy to generate electricity? What reasons would you be against nuclear power? For the against part--that would be that it's a big step of risk towards human health. For the favourable part--I guess that its just easier to ...
April 19, 2011 by Anonymous

physics
Charge polarization is normally produced by: nuclear interactions. contact. induction. friction. electrostatic means.
July 19, 2008 by Claire

physics
Which of these two bodies gets its internal heat from nuclear processes? A) Both.B) Sun.C) Neither.D) Earth.
March 24, 2012 by Jim

Physics
This is a very confusing question and I have no idea how to tackle it. - In a nuclear reactor, neutrons released by nuclear fission must be slowed down before they can trigger additional reactions in other nuclei. To see what sort of material is most effective in slowing (or ...
October 30, 2009 by Sal

Chemistry - physical, chemical and nuclear process
A healthy human body maintains a temperature of about 37.00C. Explain how physical, chemical and nuclear processes all contribute, directly or indirectly, to keeping the human body at a constant temperature.
February 25, 2011 by Farah

Chemistry - physical, chemical and nuclear process
A healthy human body maintains a temperature of about 37.00C. Explain how physical, chemical and nuclear processes all contribute, directly or indirectly, to keeping the human body at a constant temperature.
February 27, 2011 by Farah

physics
Some of the branches of physics that you will study in this course investigate motion, the properties of materials, sound, light, electricity and magnetism, properties of atoms, and nuclear reactions. Give at least one example of an application of each branch.
August 25, 2014 by Jack

physics
Some of the branches of physics that you will study in this course investigate motion, the properties of materials, sound, light, electricity and magnetism, properties of atoms, and nuclear reactions. Give at least one example of an application of each branch.
August 25, 2014 by Jack

Nuclear Crisis Worker appreciation
the workers who have been trying to bring the nuclear crisis under control volunteered 4 the job. what factors might they have weighed when deciding whether or not to stay behind and help. What qualities do you think these people must possess? Why do you suppose the japanese ...
April 19, 2011 by Anonymous

Science 3
What is characteristic of a main sequence star? A.It has a mass less than the Sunís B.It has rapid rotation and a strong stellar wind C.Nuclear fusion in the core varies due to the amount of gravitational contraction that occurs and which heavy elements are produced D.The rate...
November 2, 2006 by Liz

physics
Charge polarization is normally produced by ____________________. A) nuclear interactions.B) contact.C) induction.D) friction.E) electrostatic means.
April 10, 2012 by Kristie

physics
Charge polarization is normally produced by ____________________. A) nuclear interactions.B) contact.C) induction.D) friction.E) electrostatic means.
April 13, 2012 by Kristie

Science
"current or proposed methods for implementing nuclear power plants" I'm researching different things about nuclear power and this is the next category. I'm not quite sure what it means, please let me know. Also, I need three pieces of info. to go under this category, so if you...
December 10, 2009 by Ashley

Physics
I need help with question one and I need question three to be checked please? 1.How does the mass of a nucleon compare with the mass of an electron? 3.Why do protons in a very large nucleus have a greater chance of flying apart by electrical repulsion? -I think its because the...
November 11, 2007 by Soly

Physics - The Branches of Physics
Give at least one example of an application of each branch: Motion -cellphone Properties of Materials Sound -Radios Light -Candle Electricity -Calculator Magnetism -VCR's Properties of atoms -Computers Nuclear physics -? Could you check to see if Ive done this right? And I ...
September 9, 2011 by Anonymous

physics
1.Distinguish between atomic physics and nuclear physics? 2.Briefly describe the Bohr model of the atom. What is Bohrís key idea (involving matter waves) that makes the Bohr atom have discrete energy levels? I really didnt understand what they were wanting, so many of ...
November 6, 2007 by Will

Social Studies (France and nuclear arms)
follow up question: what are some reasons that france have the right to nuclear arms? i know that in general it's for security and power but i dont know the specifics...... security, it's not like they have any threats right? and power.. im not sure what to say about that
June 9, 2009 by ellie

science
14. Chemical runoff from fields, oil spills, and erosion is the major source of (1 point) a. air pollution b. water pollution c. hydropower d. renewable energy 15. Which compound causes the depletion of earth's ozone layer? (1 point) a. ultraviolet radiation b. ...
February 12, 2014 by bla

Social Studies (France and nuclear arms)
can anyone educate me about why france should have the right to nuclear arms?? and be specific about what the arms and rights are? please please please! i need to argue about it. thank you!
June 8, 2009 by ellie

Physics check
In a nuclear reaction where energy is released, which has more mass, the products or the reactants? The reactants?
April 25, 2008 by Emily

chem plz help!
the rate of a nuclear reaction can be changed by?? i know adding a catalyst to a normal reaction can but to a nuclear im not sure. increasing temp decreasing pressure adding a catalyst none I suppose it all depends upon how you define a catalyst. Perhaps in a small way ...
April 30, 2007 by luis

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