Question 1

When a neutron collides with a uranium-235 nucleus it can induce a variety of fission reactions. One such reaction is -27 kg; 1 kiloton = 5.0 × 1012 J. A)  0.57 kg B)  0.66 kg C)  6.58 kg D)  3.85 kg E)  1.10 kg" class="answers-bank-image d-inline" rel="preload" > Given the following mass values: -27 kg; 1 kiloton = 5.0 × 1012 J. A)  0.57 kg B)  0.66 kg C)  6.58 kg D)  3.85 kg E)  1.10 kg" class="answers-bank-image d-inline" rel="preload" > , 139.921620 u; -27 kg; 1 kiloton = 5.0 × 1012 J. A)  0.57 kg B)  0.66 kg C)  6.58 kg D)  3.85 kg E)  1.10 kg" class="answers-bank-image d-inline" rel="preload" > , 93.915367 u; -27 kg; 1 kiloton = 5.0 × 1012 J. A)  0.57 kg B)  0.66 kg C)  6.58 kg D)  3.85 kg E)  1.10 kg" class="answers-bank-image d-inline" rel="preload" > , 235.043924 u; -27 kg; 1 kiloton = 5.0 × 1012 J. A)  0.57 kg B)  0.66 kg C)  6.58 kg D)  3.85 kg E)  1.10 kg" class="answers-bank-image d-inline" rel="preload" > , 1.008665 u, what mass of uranium is needed to produce a 10-kiloton yield?
1 u = 1.660540 × 10-27 kg; 1 kiloton = 5.0 × 1012 J.

Accepted Answer

A)   0.57 kg
B)   0.66 kg
C)   6.58 kg
D)   3.85 kg
E)   1.10 kgF) C) and E)
G) D) and E)

Question 2

An electron and a positron annihilate each other, emitting two identical photons in the process. What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10-31 kg and h = 6.63 × 10-34 Js.

Accepted Answer

A)   1.21 × 10-12 m
B)   1.73 × 10-12 m
C)   2.43 × 10-12 m
D)   3.07 × 10-12 m
E)   3.46 × 10-12 mF) B) and E)
G) C) and D) C

Question 3

Composite particles that are composed of two quarks are called

Accepted Answer

A)   leptons.
B)   hadrons.
C)   mesons.
D)   bosons.
E)   baryons.F) A) and E)
G) C) and E)

Question 4

A moderator is inserted into a fission reaction to absorb neutrons and prevent additional fissions.

Accepted Answer

A) True 
 B)False  False

Question 5

What is the nuclear radius of 90Sr?

Accepted Answer

A)   4.0 × 10-15 m
B)   1.2 × 10-15 m
C)   1.1 × 10-13 m
D)   5.4 × 10-15 m
E)   3.3 × 10-13 mF) B) and E)
G) D) and E)

Question 6

Elementary particles that experience the weak nuclear force but not the strong force are called

Accepted Answer

A)   leptons.
B)   hadrons.
C)   mesons.
D)   bosons.
E)   baryons.F) A) and B)
G) C) and E)

Question 7

Fermium-253 has a half-life of 3.00 days. A sample of fermium has 3.88 × 106 nuclei. What is the initial activity of this sample?

Accepted Answer

A)   10.4 Bq
B)   10.4 Ci
C)   12.9 Bq
D)   12.9 CiE) A) and B)
F) None of the above

Question 8

Uranium-238 decays into thorium-234 plus an alpha particle. How much energy is released in this process? 1 u = 931.494 MeV/c2. The relevant mass values are:
2. The relevant mass values are:   , 4.002603 u;   , 234.043583 u;   , 238.050786 u. A)  4.28 MeV B)  3.76 MeV C)  3.18 MeV D)  2.89 MeV E)  5.05 MeV" class="answers-bank-image d-inline" rel="preload" > , 4.002603 u; 2. The relevant mass values are:   , 4.002603 u;   , 234.043583 u;   , 238.050786 u. A)  4.28 MeV B)  3.76 MeV C)  3.18 MeV D)  2.89 MeV E)  5.05 MeV" class="answers-bank-image d-inline" rel="preload" > , 234.043583 u; 2. The relevant mass values are:   , 4.002603 u;   , 234.043583 u;   , 238.050786 u. A)  4.28 MeV B)  3.76 MeV C)  3.18 MeV D)  2.89 MeV E)  5.05 MeV" class="answers-bank-image d-inline" rel="preload" > , 238.050786 u.

Accepted Answer

A)   4.28 MeV
B)   3.76 MeV
C)   3.18 MeV
D)   2.89 MeV
E)   5.05 MeVF) C) and D)
G) C) and E)

Question 9

Composite particles that are composed of three quarks are called

Accepted Answer

A)   leptons.
B)   hadrons.
C)   mesons.
D)   bosons.
E)   baryons.F) C) and E)
G) A) and B)

Question 10

Polonium-216 decays to lead-212 by emitting what kind of nuclear radiation?

Accepted Answer

A)   Alpha
B)   Beta minus
C)   Beta plus
D)   Gamma
E)   X-rays.F) C) and D)
G) A) and E)

Question 11

The competition between the electrostatic force between the protons in a nucleus and the strong nuclear force determines whether a nucleus is stable.

Accepted Answer

A) True 
 B)False

Question 12

The decay constant of radon is 0.181 day s-1. A sample of radon contains 6.00 × 108 radon atoms. How many atoms are left after 10.0 days?

Accepted Answer

A)   9.82 × 107
B)   7.67 × 107
C)   8.34 × 108
D)   7.29 × 108
E)   8.56 × 108F) C) and E)
G) A) and C)

Question 13

A fission reaction in which more neutrons are given off than are needed to initiate the reaction is called

Accepted Answer

A)   a critical reaction.
B)   a chain reaction.
C)   a fusion reaction.
D)   a neutron catastrophe.
E)   a chemical reaction.F) All of the above
G) C) and D)

Question 14

If a reactor produces an average power of 1000 MW for a year, how much 235U is used up assuming 200 MeV are released per fission?

Accepted Answer

A)   0.35 kg
B)   1.75 kg
C)   384 kg
D)   1.1 × 108 kg
E)   3.3 × 108 kgF) B) and D)
G) A) and E)

Question 15

In beta minus decay, the number of neutrons in the nucleus is

Accepted Answer

A)   decreased by 1.
B)   decreased by 2.
C)   increased by 1.
D)   increased by 2.
E)   remains unchanged.F) B) and C)
G) A) and D) A

Question 16

What combination of quarks produces a proton and what are the electric charges on these quarks, expressed in terms of e?

Accepted Answer

uud,with c...

Question 17

Consider a particle composed of quarks.
(a) The negative pion is composed of what combination of up and down quarks?
(b) Is the negative pion a baryon or meson?
(c) Is the negative pion a lepton or a hadron?

Accepted Answer

(a)

d
(b)...

Question 18

An old bone sample contains 321. grams of carbon and its activity is 947. decays/min.
(5730. yr half life of Carbon-14)
(a) How many thousand years old is the sample?
(b) What will be the activity of the sample 2000. yrs from now?

Accepted Answer

(a)14.thou...

Question 19

The proton is slightly more massive than the neutron.

Accepted Answer

A) True 
 B)False

Question 20

The symbol for a certain isotope of strontium is  . What is the mass number of this isotope?

Accepted Answer

A)   38
B)   52
C)   88
D)   90
E)   128F) A) and E)
G) B) and E)

Exam 32: Nuclear Physics and Nuclear Radiation

Correct Answer
verified

An electron and a positron annihilate each other, emitting two identical photons in the process. What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10^-31 kg and h = 6.63 × 10^-34 Js.

Correct Answer
verified
C

Composite particles that are composed of two quarks are called

Correct Answer
verified

A moderator is inserted into a fission reaction to absorb neutrons and prevent additional fissions.

Correct Answer
verified
False

What is the nuclear radius of ⁹⁰Sr?

Correct Answer
verified

Elementary particles that experience the weak nuclear force but not the strong force are called

Correct Answer
verified

Fermium-253 has a half-life of 3.00 days. A sample of fermium has 3.88 × 10⁶ nuclei. What is the initial activity of this sample?

Correct Answer
verified

Uranium-238 decays into thorium-234 plus an alpha particle. How much energy is released in this process? 1 u = 931.494 MeV/c². The relevant mass values are: , 4.002603 u; , 234.043583 u; , 238.050786 u.

Correct Answer
verified

Composite particles that are composed of three quarks are called

Correct Answer
verified

Polonium-216 decays to lead-212 by emitting what kind of nuclear radiation?

Correct Answer
verified

The competition between the electrostatic force between the protons in a nucleus and the strong nuclear force determines whether a nucleus is stable.

Correct Answer
verified

The decay constant of radon is 0.181 day s^-1. A sample of radon contains 6.00 × 10⁸ radon atoms. How many atoms are left after 10.0 days?

Correct Answer
verified

A fission reaction in which more neutrons are given off than are needed to initiate the reaction is called

Correct Answer
verified

If a reactor produces an average power of 1000 MW for a year, how much ²³⁵U is used up assuming 200 MeV are released per fission?

Correct Answer
verified

In beta minus decay, the number of neutrons in the nucleus is

Correct Answer
verified
A

What combination of quarks produces a proton and what are the electric charges on these quarks, expressed in terms of e?

Correct Answer
verified
uud,with c...
View Answer

Consider a particle composed of quarks. (a) The negative pion is composed of what combination of up and down quarks? (b) Is the negative pion a baryon or meson? (c) Is the negative pion a lepton or a hadron?

Correct Answer
verified
(a) d
(b)...
View Answer

An old bone sample contains 321. grams of carbon and its activity is 947. decays/min. (5730. yr half life of Carbon-14) (a) How many thousand years old is the sample? (b) What will be the activity of the sample 2000. yrs from now?

Correct Answer
verified
(a)14.thou...
View Answer

The proton is slightly more massive than the neutron.

Correct Answer
verified

The symbol for a certain isotope of strontium is . What is the mass number of this isotope?

Correct Answer
verified

Exam 32: Nuclear Physics and Nuclear Radiation

Correct AnswerverifiedShow Answer

An electron and a positron annihilate each other, emitting two identical photons in the process. What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10-31 kg and h = 6.63 × 10-34 Js.

Correct AnswerverifiedC

Composite particles that are composed of two quarks are called

Correct AnswerverifiedShow Answer

A moderator is inserted into a fission reaction to absorb neutrons and prevent additional fissions.

Correct AnswerverifiedFalse

What is the nuclear radius of 90Sr?

Correct AnswerverifiedShow Answer

Elementary particles that experience the weak nuclear force but not the strong force are called

Correct AnswerverifiedShow Answer

Fermium-253 has a half-life of 3.00 days. A sample of fermium has 3.88 × 106 nuclei. What is the initial activity of this sample?

Correct AnswerverifiedShow Answer

Uranium-238 decays into thorium-234 plus an alpha particle. How much energy is released in this process? 1 u = 931.494 MeV/c2. The relevant mass values are: , 4.002603 u; , 234.043583 u; , 238.050786 u.

Correct AnswerverifiedShow Answer

Composite particles that are composed of three quarks are called

Correct AnswerverifiedShow Answer

Polonium-216 decays to lead-212 by emitting what kind of nuclear radiation?

Correct AnswerverifiedShow Answer

The competition between the electrostatic force between the protons in a nucleus and the strong nuclear force determines whether a nucleus is stable.

Correct AnswerverifiedShow Answer

The decay constant of radon is 0.181 day s-1. A sample of radon contains 6.00 × 108 radon atoms. How many atoms are left after 10.0 days?

Correct AnswerverifiedShow Answer

A fission reaction in which more neutrons are given off than are needed to initiate the reaction is called

Correct AnswerverifiedShow Answer

If a reactor produces an average power of 1000 MW for a year, how much 235U is used up assuming 200 MeV are released per fission?

Correct AnswerverifiedShow Answer

In beta minus decay, the number of neutrons in the nucleus is

Correct AnswerverifiedA

What combination of quarks produces a proton and what are the electric charges on these quarks, expressed in terms of e?

Correct Answerverifieduud,with c...View AnswerShow Answer

Consider a particle composed of quarks. (a) The negative pion is composed of what combination of up and down quarks? (b) Is the negative pion a baryon or meson? (c) Is the negative pion a lepton or a hadron?

Correct Answerverified(a) d(b)...View AnswerShow Answer

An old bone sample contains 321. grams of carbon and its activity is 947. decays/min. (5730. yr half life of Carbon-14) (a) How many thousand years old is the sample? (b) What will be the activity of the sample 2000. yrs from now?

Correct Answerverified(a)14.thou...View AnswerShow Answer

The proton is slightly more massive than the neutron.

Correct AnswerverifiedShow Answer

The symbol for a certain isotope of strontium is . What is the mass number of this isotope?

Correct AnswerverifiedShow Answer

Correct Answer
verified

An electron and a positron annihilate each other, emitting two identical photons in the process. What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10^-31 kg and h = 6.63 × 10^-34 Js.

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified
False

What is the nuclear radius of ⁹⁰Sr?

Correct Answer
verified

Correct Answer
verified

Fermium-253 has a half-life of 3.00 days. A sample of fermium has 3.88 × 10⁶ nuclei. What is the initial activity of this sample?

Correct Answer
verified

Uranium-238 decays into thorium-234 plus an alpha particle. How much energy is released in this process? 1 u = 931.494 MeV/c². The relevant mass values are: , 4.002603 u; , 234.043583 u; , 238.050786 u.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The decay constant of radon is 0.181 day s^-1. A sample of radon contains 6.00 × 10⁸ radon atoms. How many atoms are left after 10.0 days?

Correct Answer
verified

Correct Answer
verified

If a reactor produces an average power of 1000 MW for a year, how much ²³⁵U is used up assuming 200 MeV are released per fission?

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified
uud,with c...
View Answer

Correct Answer
verified
(a) d
(b)...
View Answer

Correct Answer
verified
(a)14.thou...
View Answer

Correct Answer
verified

Correct Answer
verified