Suppose that a fission neutron, emitted with energy of 2 Mev, slows down to an energy...
Suppose that a fission neutron, emitted with energy of
2 Mev, slows down to an energy of 1 rev as a result of successive
collisions in a moderator. How many collisions
are required if the moderator is
• Hydrogen
• Graphite (C12)
If u238 is used, would you expect more or less please explain your
answer.
Homework Answers
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Suppose that a fission neutron, emitted with energy of
2 Mev, slows down to an energy...
please show detailed step and explanations! EXAMPLE 8.11 MODERATING FISSION NEUTRONS IN A NUCLEAR REACTOR LUTION...
please show detailed step and explanations!
EXAMPLE 8.11 MODERATING FISSION NEUTRONS IN A NUCLEAR REACTOR LUTION The fission of uranium nuclei in a nuclear reactor produces high- speed neutrons. Before such neutrons can efficiently cause addi- tional fissions, they must be slowed down by collisions with nuclei in the moderator of the reactor. The first nuclear reactor (built in 1942 at the University of Chicago) used carbon (graphite) as the moderator. Suppose a neutron (mass 1.0 u) traveling at 26...
3. A fission chain reaction. a. A neutron can cause 235U to fission, producing two daughter...
3. A fission chain reaction. a. A neutron can cause 235U to fission, producing two daughter nuclei (tin and molybdenum) and three more neutrons. These three neutrons can then, in turn, cause three more 235U nuclei to split. One typical reaction is summarized as follows: n+25131Sn + 102Mo +3 n Find the energy released in this process (in MeV), given that MC3SU) 235.0439 u; M(3Sn) 130.9169 u; M(102Mo)-101.9103 u. b. Lise Meitner's work in 1938 predicted that the fission of...
C6H12O6 + O2 > CO2 + H2O + energy (673 kcal/mol) (1) 1. Add coefficient to...
C6H12O6 + O2 > CO2 + H2O + energy (673 kcal/mol) (1)
1. Add coefficient to balance reaction (1) in model 1.
2. Does reaction (1) release or absorb energy? Is the reaction
exothermic or exothermic?
3. Reason (1) is a redox reaction. Work with your team to identify
the atom that is reduced and the atom that is oxidized in the
reaction. (Recall that when in a molecular compound, oxygen has an
oxidation number of -2 and hydrogen had...
Please summarise below in a concise way. Alternative energy is studied as a result of the increas...
Please summarise below in a concise way. Alternative energy is studied as a result of the increasing costs of energy, the harm that fossil fuel may be costing the planet and the fact the energy demand is going up and the supply of fossil fuels may be going down. Energy and economic growth have always been going up, the more energy we consume, the more wealth we create as seen in the GDP of developed nations such as the USA,...
Don't need answer to 1 and 2. NEED solution for rest of questions please. Suppose the...
Don't need answer to 1 and 2. NEED solution for rest of
questions please.
Suppose the economy is starting from a situation of long-run equilibrium. In this case, we know that its equilibrium output (Y) is equal to greater than less than its potential output (Y'). Starting from its long-run equilibrium at point 1 in the figure to the right, suppose the economy experiences a positive demand shock. 1) Using the line drawing tool, shift a single curve to show...
Problem 4: Read Appendix 2 below (Sec. 1.4.1 of Kasap) and then solve. A metallic back...
Problem 4: Read Appendix 2 below (Sec. 1.4.1 of Kasap) and then solve. A metallic back contact is applied to the CdTe solar cell of Problem 1 using a set up similar to that described in Figure 1.74 (b) on the next page. To form the metallic back contact, two evaporation sources are used, Cu and Au. An initial 3 nm layer of Cu is deposited first and then 30 nm of Au is deposited. After these depositions, the sample...
No spacing Heading 1 Heading 2 Title 7. Where in the body would you find a...
No spacing Heading 1 Heading 2 Title 7. Where in the body would you find a simple cuboidal epithelium? (1) 8. What anatomical feature is found in an exocrine gland that is lacking in an endocrine gland? (1) 9. The connective tissue underlying the epidermis would be classified as: (1) a. Dense regular b. Dense irregular C. Loose d. Cartilage e. None of the above 10. What feature is common to all forms of connective tissue? (1) 11. Explain how...
Please answer as many as possible!! QUESTION 10 As the hydrogen ion [H +] concentration in...
Please answer as many as possible!! QUESTION 10 As the hydrogen ion [H +] concentration in a solution decreases, the hydroxide ion [OH -] concentration increases and the pH increases. decreases and the pH increases. increases and the pH decreases. decreases and the pH stays the same. decreases and the pH decreases. 1 points QUESTION 11 Environmental science is a theoretical approach in interpreting the environment. way to see the world in scientific terms. narrowly defined set of physical,...
need help with this .. From the pages 571-587 attached below. 1a) Suppose a population of...
need help with this ..
From the pages 571-587 attached below.
1a) Suppose a population of guppies was infected with a
parasite. In that population a mutation results in a parasite
resistant genotype that spreads through the population through
natural selection. A subsequent mutation in the parasite results in
a genotype that is unaffected by the newly evolved resistant guppy
genotype. What is the name of the hypothesis that explains this
host parasite “arms race”.?
1b) What is this name...
Instructions: The assignment is based on the mini case below. The instructions relating to the assignment...
Instructions: The assignment is based on the mini case below. The instructions relating to the assignment are at the end of the case. Liz Jenkins and David Lee are facing an important decision. After having discussed different financial scenarios into the wee hours of the morning, the two computer engineers felt it was time to finalize their cash flow projections and move to the next stage – decide which of two possible projects they should undertake. Both had a bachelor...
please show detailed step and explanations!
EXAMPLE 8.11 MODERATING FISSION NEUTRONS IN A NUCLEAR REACTOR LUTION The fission of uranium nuclei in a nuclear reactor produces high- speed neutrons. Before such neutrons can efficiently cause addi- tional fissions, they must be slowed down by collisions with nuclei in the moderator of the reactor. The first nuclear reactor (built in 1942 at the University of Chicago) used carbon (graphite) as the moderator. Suppose a neutron (mass 1.0 u) traveling at 26...
3. A fission chain reaction. a. A neutron can cause 235U to fission, producing two daughter nuclei (tin and molybdenum) and three more neutrons. These three neutrons can then, in turn, cause three more 235U nuclei to split. One typical reaction is summarized as follows: n+25131Sn + 102Mo +3 n Find the energy released in this process (in MeV), given that MC3SU) 235.0439 u; M(3Sn) 130.9169 u; M(102Mo)-101.9103 u. b. Lise Meitner's work in 1938 predicted that the fission of...
C6H12O6 + O2 > CO2 + H2O + energy (673 kcal/mol) (1)
1. Add coefficient to balance reaction (1) in model 1.
2. Does reaction (1) release or absorb energy? Is the reaction
exothermic or exothermic?
3. Reason (1) is a redox reaction. Work with your team to identify
the atom that is reduced and the atom that is oxidized in the
reaction. (Recall that when in a molecular compound, oxygen has an
oxidation number of -2 and hydrogen had...
Don't need answer to 1 and 2. NEED solution for rest of
questions please.
Suppose the economy is starting from a situation of long-run equilibrium. In this case, we know that its equilibrium output (Y) is equal to greater than less than its potential output (Y'). Starting from its long-run equilibrium at point 1 in the figure to the right, suppose the economy experiences a positive demand shock. 1) Using the line drawing tool, shift a single curve to show...
Problem 4: Read Appendix 2 below (Sec. 1.4.1 of Kasap) and then solve. A metallic back contact is applied to the CdTe solar cell of Problem 1 using a set up similar to that described in Figure 1.74 (b) on the next page. To form the metallic back contact, two evaporation sources are used, Cu and Au. An initial 3 nm layer of Cu is deposited first and then 30 nm of Au is deposited. After these depositions, the sample...
No spacing Heading 1 Heading 2 Title 7. Where in the body would you find a simple cuboidal epithelium? (1) 8. What anatomical feature is found in an exocrine gland that is lacking in an endocrine gland? (1) 9. The connective tissue underlying the epidermis would be classified as: (1) a. Dense regular b. Dense irregular C. Loose d. Cartilage e. None of the above 10. What feature is common to all forms of connective tissue? (1) 11. Explain how...
need help with this ..
From the pages 571-587 attached below.
1a) Suppose a population of guppies was infected with a
parasite. In that population a mutation results in a parasite
resistant genotype that spreads through the population through
natural selection. A subsequent mutation in the parasite results in
a genotype that is unaffected by the newly evolved resistant guppy
genotype. What is the name of the hypothesis that explains this
host parasite “arms race”.?
1b) What is this name...
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