How much kinetic energy must a deuterium ion (charge 1.6 * 10 - 19 C)have to approach to within 10 - 14 m of another deuterium ion? (1 MeV = 1.6*10 - 13 J)

The answer of How much kinetic energy must a deuterium...

Find the number of nuclei per unit volume (n = nuclei/cm3)for lead. atomic weight = 202.7 Density = 11.5 g/cm3 Avogadro's number = 6.02 *1023

A) 2.51 * 1022 B) 3.42 * 1022 C) 2.93 * 1022 D) 2.94 * 1023 E) 2.05 *1021 A) 2.51 * 1022 B) 3.42 * 1022 C) 2.93 * 1022 D) 2.94 * 1023 E) 2.05 *1021

When a nucleus at rest spontaneously splits into fragments of mass m1 and m2,the ratio of the velocity of m1 to the velocity of m2 is

A) $- \frac { m _ { 1 } } { m _ { 2 } }$ . B) $- \frac { m _ { 2 } } { m _ { 1 } }$ . C) -1. D) $+ \frac { m _ { 1 } } { m _ { 1 } + m _ { 2 } }$ . E) $+ \frac { m _ { 2 } } { m _ { 1 } + m _ { 2 } }$ . A) $- \frac { m _ { 1 } } { m _ { 2 } }$ . B) $- \frac { m _ { 2 } } { m _ { 1 } }$ . C) -1. D) $+ \frac { m _ { 1 } } { m _ { 1 } + m _ { 2 } }$ . E) $+ \frac { m _ { 2 } } { m _ { 1 } + m _ { 2 } }$ .

Exam 30: Nuclear Physics

How many grams of U-235 must be fissioned every day to produce 1 000 MW of electricity in a nuclear power plant that is 1/3 efficient? [Assume 208 MeV/fission and 1 MeV = 1.6 *10 ^- ¹³ J]

(Short Answer)

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Question 21

Find the ratio of the binding energy per nucleon for helium ( ${ } _ { 2 } ^ { 4 } \mathrm { He }$ )to uranium-238 ( ${ } _ { 92 } ^ { 238 } \mathrm { U }$ ). Assume: M_p = 1.007 825 u M_n = 1.008 665 u M_He = 4.002 603 u M_U = 238.050 786 u U = 1.66 *10 ^- ²⁷ kg

(Multiple Choice)

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Question 22

It is often possible to use atomic masses when calculating the binding energy of a nucleus.This is not true for calculating the Q value for the e⁺ decay process since

(Multiple Choice)

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Question 23

How much kinetic energy must a deuterium ion (charge 1.6 * 10 ^- ¹⁹ C)have to approach to within 10 ^- ¹⁴ m of another deuterium ion? (1 MeV = 1.6*10 ^- ¹³ J)

(Short Answer)

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Question 24

The Q value for the following reaction, ${ } _ { 4 } ^ { 9 } \mathrm { Be } ( \alpha , \mathrm { n } ) { } _ { 6 } ^ { 12 } \mathrm { C }$ ,is (in MeV) m(alpha)= 4.002 603 u M(Be)= 9.012 182 u M(n)= 1.008 665 u M(C)= 12.000 00 u 1 u = 1.66 *10 ^- ²⁷ kg

(Multiple Choice)

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Question 25

An alpha particle is emitted from a radioactive source with an energy of 5 MeV.How fast is it moving (in m/s)? (m = 4.002 603 u,1 u = 1.66 *10^-²⁷ kg. )

(Multiple Choice)

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Question 26

When a neutron decays,a proton and an electron are observed.When the electrons emitted from a sample of neutrons are observed,they are found to have different kinetic energies.This was accounted for by

(Multiple Choice)

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Question 27

The theory of nuclear astrophysics is that all the heavy elements like uranium are formed in the interior of massive stars.These stars eventually explode,releasing these elements into space.If we assume that at the time of the explosion there were equal amount of U-235 and U-238,how long ago did the star(s)explode that released the elements that formed our Earth? The present U-235/U-238 ratio is 0.007 0.[The half-lives of U-235 and U-238 are 0.7 * 10⁹ yr and 4.47 * 10⁹ yr.]

(Short Answer)

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Question 28

The isotope,tritium,has a half-life of 12.3 years.Assume we have 10 kg of the substance.What will be the initial decay rate,at t = 0 (in decays/s)?

(Multiple Choice)

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Question 29

What value of Z (atomic number)and A (mass number)result in the following $\beta$ -decay? ${ } _ { 6 } ^ { 14 } \mathrm { C } \rightarrow { } _ { Z } ^ { A } \mathrm { X } + e ^ { - }$

(Multiple Choice)

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Question 30

Because we know that the half-lives of many radioactive isotopes are millions of years,we can deduce that

(Multiple Choice)

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Question 31

What value of Z (atomic number)and A (mass number)result in the following $\beta$ -decay? ${ } _ { 7 } ^ { 12 } \mathrm {~N} \rightarrow { } _ { Z } ^ { A } \mathrm { X } + e ^ { + }$

(Multiple Choice)

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Question 32

How many radioactive atoms are present in a sample that has an activity of 0.5 $\mu$ Ci and a half-life of 10 years? (1 curie = 3.7 * 10¹⁰ decays/s)

(Multiple Choice)

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Question 33

What is the disintegration energy (in MeV)associated with this spontaneous decay? ${ } _ { 60 } ^ { 144 } \mathrm { Nd } \rightarrow { } _ { 58 } ^ { 140 } \mathrm { Ce } + { } _ { 2 } ^ { 4 } \mathrm { He }$ m_Nd = 143.910 083 u m_Ce = 139.905 434 u M_He = 4.002 603 u 1 u = 1.66 *10 ^- ²⁷ kg

(Multiple Choice)

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Question 34

The chart below shows part of the radioactive series beginning with the isotope ${ } _ { 92 } ^ { 235 } \mathrm { U }$ .The isotope marked with an X is $The chart below shows part of the radioactive series beginning with the isotope { } _ { 92 } ^ { 235 } \mathrm { U } .The isotope marked with an X is$

(Multiple Choice)

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Question 35

One of the naturally occurring radioactive series begins with ${ } _ { 92 } ^ { 238 } \mathrm { U }$ .Which of the following isotopes is the stable isotope at the end of this series?

(Multiple Choice)

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Question 36

Find the number of nuclei per unit volume (n = nuclei/cm³)for lead. atomic weight = 202.7 Density = 11.5 g/cm³ Avogadro's number = 6.02 *10²³

(Multiple Choice)

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Question 37

When a nucleus at rest spontaneously splits into fragments of mass m₁ and m₂,the ratio of the velocity of m₁ to the velocity of m₂ is

(Multiple Choice)

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Question 38

Approximately how much uranium (in kg)must undergo fission per day to provide 1 000 MW of power? (Assume an efficiency of 30%).The nuclear reaction is $\mathrm { n } + { } _ { 92 } ^ { 235 } \mathrm { U } \rightarrow { } _ { 56 } ^ { 141 } \mathrm { Ba } + { } _ { 36 } ^ { 92 } \mathrm { Kr } + 3 \mathrm { n }$ . m(n)= 1.008 665 u M(U)= 235.043 915 u M(Ba)= 140.913 9 u M(Kr)= 91.897 3 u U = 1.66 *10 ^- ²⁷ kg

(Multiple Choice)

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Question 39

Find the binding energy (in MeV)of carbon-12. Assume: M_C = 12.000 000 u M_p = 1.007 825 u M_n = 1.008 665 u U = 1.66 *10 ^- ²⁷ kg

(Multiple Choice)

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Question 40

Showing 21 - 40 of 62

Exam 30: Nuclear Physics

How many grams of U-235 must be fissioned every day to produce 1 000 MW of electricity in a nuclear power plant that is 1/3 efficient? [Assume 208 MeV/fission and 1 MeV = 1.6 *10 - 13 J]

Find the ratio of the binding energy per nucleon for helium ( 24He{ } _ { 2 } ^ { 4 } \mathrm { He }24​He )to uranium-238 ( 92238U{ } _ { 92 } ^ { 238 } \mathrm { U }92238​U ). Assume: M p = 1.007 825 u M n = 1.008 665 u MHe = 4.002 603 u MU = 238.050 786 u U = 1.66 *10 - 27 kg

It is often possible to use atomic masses when calculating the binding energy of a nucleus.This is not true for calculating the Q value for the e+ decay process since

How much kinetic energy must a deuterium ion (charge 1.6 * 10 - 19 C)have to approach to within 10 - 14 m of another deuterium ion? (1 MeV = 1.6*10 - 13 J)

The Q value for the following reaction, 49Be(α,n)612C{ } _ { 4 } ^ { 9 } \mathrm { Be } ( \alpha , \mathrm { n } ) { } _ { 6 } ^ { 12 } \mathrm { C }49​Be(α,n)612​C ,is (in MeV) m(alpha)= 4.002 603 u M(Be)= 9.012 182 u M(n)= 1.008 665 u M(C)= 12.000 00 u 1 u = 1.66 *10 - 27 kg

An alpha particle is emitted from a radioactive source with an energy of 5 MeV.How fast is it moving (in m/s)? (m = 4.002 603 u,1 u = 1.66 *10-27 kg. )

When a neutron decays,a proton and an electron are observed.When the electrons emitted from a sample of neutrons are observed,they are found to have different kinetic energies.This was accounted for by

The isotope,tritium,has a half-life of 12.3 years.Assume we have 10 kg of the substance.What will be the initial decay rate,at t = 0 (in decays/s)?

What value of Z (atomic number)and A (mass number)result in the following β\betaβ -decay? 614C→ZAX+e−{ } _ { 6 } ^ { 14 } \mathrm { C } \rightarrow { } _ { Z } ^ { A } \mathrm { X } + e ^ { - }614​C→ZA​X+e−

Because we know that the half-lives of many radioactive isotopes are millions of years,we can deduce that

What value of Z (atomic number)and A (mass number)result in the following β\betaβ -decay? 712 N→ZAX+e+{ } _ { 7 } ^ { 12 } \mathrm {~N} \rightarrow { } _ { Z } ^ { A } \mathrm { X } + e ^ { + }712​ N→ZA​X+e+

How many radioactive atoms are present in a sample that has an activity of 0.5 μ\muμ Ci and a half-life of 10 years? (1 curie = 3.7 * 1010 decays/s)

The chart below shows part of the radioactive series beginning with the isotope 92235U{ } _ { 92 } ^ { 235 } \mathrm { U }92235​U .The isotope marked with an X is

One of the naturally occurring radioactive series begins with 92238U{ } _ { 92 } ^ { 238 } \mathrm { U }92238​U .Which of the following isotopes is the stable isotope at the end of this series?

Find the number of nuclei per unit volume (n = nuclei/cm3)for lead. atomic weight = 202.7 Density = 11.5 g/cm3 Avogadro's number = 6.02 *1023

When a nucleus at rest spontaneously splits into fragments of mass m1 and m2,the ratio of the velocity of m1 to the velocity of m2 is

Find the binding energy (in MeV)of carbon-12. Assume: MC = 12.000 000 u M p = 1.007 825 u M n = 1.008 665 u U = 1.66 *10 - 27 kg

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How many grams of U-235 must be fissioned every day to produce 1 000 MW of electricity in a nuclear power plant that is 1/3 efficient? [Assume 208 MeV/fission and 1 MeV = 1.6 *10 ^- ¹³ J]

Find the ratio of the binding energy per nucleon for helium ( ${ } _ { 2 } ^ { 4 } \mathrm { He }$ )to uranium-238 ( ${ } _ { 92 } ^ { 238 } \mathrm { U }$ ). Assume: M_p = 1.007 825 u M_n = 1.008 665 u M_He = 4.002 603 u M_U = 238.050 786 u U = 1.66 *10 ^- ²⁷ kg

It is often possible to use atomic masses when calculating the binding energy of a nucleus.This is not true for calculating the Q value for the e⁺ decay process since

How much kinetic energy must a deuterium ion (charge 1.6 * 10 ^- ¹⁹ C)have to approach to within 10 ^- ¹⁴ m of another deuterium ion? (1 MeV = 1.6*10 ^- ¹³ J)

The Q value for the following reaction, ${ } _ { 4 } ^ { 9 } \mathrm { Be } ( \alpha , \mathrm { n } ) { } _ { 6 } ^ { 12 } \mathrm { C }$ ,is (in MeV) m(alpha)= 4.002 603 u M(Be)= 9.012 182 u M(n)= 1.008 665 u M(C)= 12.000 00 u 1 u = 1.66 *10 ^- ²⁷ kg

An alpha particle is emitted from a radioactive source with an energy of 5 MeV.How fast is it moving (in m/s)? (m = 4.002 603 u,1 u = 1.66 *10^-²⁷ kg. )

What value of Z (atomic number)and A (mass number)result in the following $\beta$ -decay? ${ } _ { 6 } ^ { 14 } \mathrm { C } \rightarrow { } _ { Z } ^ { A } \mathrm { X } + e ^ { - }$

What value of Z (atomic number)and A (mass number)result in the following $\beta$ -decay? ${ } _ { 7 } ^ { 12 } \mathrm {~N} \rightarrow { } _ { Z } ^ { A } \mathrm { X } + e ^ { + }$

How many radioactive atoms are present in a sample that has an activity of 0.5 $\mu$ Ci and a half-life of 10 years? (1 curie = 3.7 * 10¹⁰ decays/s)

One of the naturally occurring radioactive series begins with ${ } _ { 92 } ^ { 238 } \mathrm { U }$ .Which of the following isotopes is the stable isotope at the end of this series?

Find the number of nuclei per unit volume (n = nuclei/cm³)for lead. atomic weight = 202.7 Density = 11.5 g/cm³ Avogadro's number = 6.02 *10²³

When a nucleus at rest spontaneously splits into fragments of mass m₁ and m₂,the ratio of the velocity of m₁ to the velocity of m₂ is

Find the binding energy (in MeV)of carbon-12. Assume: M_C = 12.000 000 u M_p = 1.007 825 u M_n = 1.008 665 u U = 1.66 *10 ^- ²⁷ kg