Question 1

The tokamak is a device designed to produce

Accepted Answer

A)  tritium. 
B)  lithium hydride pellets. 
C)  carbon cycles. 
D)  controlled fission. 
E)  controlled fusion. 
A)  tritium. 
B)  lithium hydride pellets. 
C)  carbon cycles. 
D)  controlled fission. 
E)  controlled fusion. E

Question 2

In the reaction 4He + 9Be → n + 12C, how much energy is released or absorbed? The masses of the neutral atoms are as follows: the mas of 4He is 4.0026033 u, the mass of 9Be is 9.0121831 u, the mass of n is 1.0086649 u, and the mass of 12C is 12.0000000 u.

Accepted Answer

A)  4.21 MeV absorbed 
B)  4.21 MeV released 
C)  5.70 MeV absorbed 
D)  5.70 MeV released 
E)  6.34 MeV released 
A)  4.21 MeV absorbed 
B)  4.21 MeV released 
C)  5.70 MeV absorbed 
D)  5.70 MeV released 
E)  6.34 MeV released D

Question 3

When 241 Am decays by emitting an alpha particle of kinetic energy 5.5 MeV, what is the recoil energy of the daughter nucleus?

Accepted Answer

A)  5.5 MeV 
B)  1.3 MeV 
C)  0.88 MeV 
D)  0.093 MeV 
E)  0.091 MeV 
A)  5.5 MeV 
B)  1.3 MeV 
C)  0.88 MeV 
D)  0.093 MeV 
E)  0.091 MeV D

Question 4

A nuclide whose "generic" symbol is   would have how many protons and neutrons, respectively?

Accepted Answer

A)  64, 30 
B)  30, 64 
C)  30, 34 
D)  34, 30 
A)  64, 30 
B)  30, 64 
C)  30, 34 
D)  34, 30

Question 5

How many atoms are in one gram of   ?

Accepted Answer

A)  1.63 × 1025 
B)  6.02 × 1022 
C)  1.51 × 1023 
D)  2.23 × 1025 
E)  2.23 × 1022 
A)  1.63 × 1025 
B)  6.02 × 1022 
C)  1.51 × 1023 
D)  2.23 × 1025 
E)  2.23 × 1022

Question 6

If a 60 kg person received a biologically equivalent dose of 1.7 rem of radiation with an RBE of 1.1, what was the total energy absorbed by the person?

Accepted Answer

A)  1.7 J 
B)  1.5 J 
C)  0.93 J 
D)  0.015 J 
E)  0.26 J 
A)  1.7 J 
B)  1.5 J 
C)  0.93 J 
D)  0.015 J 
E)  0.26 J

Question 7

A beam of gamma rays strikes a lead target with a half-value layer of 0.40 cm. What fraction of the photons in the beam will penetrate to a depth of 1.20 cm or more?

Accepted Answer

A)  0.500 
B)  0.400 
C)  0.333 
D)  0.250 
E)  0.125 
A)  0.500 
B)  0.400 
C)  0.333 
D)  0.250 
E)  0.125

Question 8

The majority of the average yearly radiation exposure from nonmedical sources, for people living in the United States, comes from

Accepted Answer

A)  eating bananas. 
B)  cosmic rays. 
C)  naturally occurring uranium. 
D)  radon gas. 
E)  smoke detectors. 
A)  eating bananas. 
B)  cosmic rays. 
C)  naturally occurring uranium. 
D)  radon gas. 
E)  smoke detectors.

Question 9

Of those elements listed below, the binding energy per nucleon reaches a maximum closest to

Accepted Answer

A)  oxygen. 
B)  iron. 
C)  gold. 
D)  tungsten. 
E)  uranium. 
A)  oxygen. 
B)  iron. 
C)  gold. 
D)  tungsten. 
E)  uranium.

Question 10

What is the binding energy per nucleon for 12C?

Accepted Answer

A)  137 MeV 
B)  104 MeV 
C)  92.2 MeV 
D)  46.1 MeV 
E)  7.68 MeV 
A)  137 MeV 
B)  104 MeV 
C)  92.2 MeV 
D)  46.1 MeV 
E)  7.68 MeV

Question 11

What is the volume of the   nucleus?

Accepted Answer

A)  6.7 × 10-43 m3 
B)  5.2 × 10-42 m3 
C)  1.7 × 10-42 m3 
D)  1.6 × 10-42 m3 
E)  1.2 × 10-12 m3 
A)  6.7 × 10-43 m3 
B)  5.2 × 10-42 m3 
C)  1.7 × 10-42 m3 
D)  1.6 × 10-42 m3 
E)  1.2 × 10-12 m3

Question 12

How many neutrons are in a 35Cl nucleus?

Accepted Answer

A)  17 
B)  18 
C)  16 
D)  19 
A)  17 
B)  18 
C)  16 
D)  19

Question 13

For a sample of a given radioactive isotope, the ratio of the number of atoms of the isotope at time t to the number at time t + T1/2 is

Accepted Answer

A)  always 2. 
B)  dependent on how long it has been since t = 0. 
C)  Dependent upon what the value of T1/2. 
D)  always 1/2. 
E)  might be any number less than 1/2. 
A)  always 2. 
B)  dependent on how long it has been since t = 0. 
C)  Dependent upon what the value of T1/2. 
D)  always 1/2. 
E)  might be any number less than 1/2.

Question 14

If a nucleus has a volume of 1.0 × 10-42 m3, what is its mass number?

Accepted Answer

A)  1 
B)  25 
C)  100 
D)  138 
E)  174 
A)  1 
B)  25 
C)  100 
D)  138 
E)  174

Question 15

If a nuclide has a half-life of 100 s, what is the corresponding mean lifetime?

Accepted Answer

A)  100 s 
B)  144 s 
C)  69 s 
D)  50 s 
E)  75 s 
A)  100 s 
B)  144 s 
C)  69 s 
D)  50 s 
E)  75 s

Question 16

16O, 17O, and 18O are ________ of oxygen.

Accepted Answer

A)  isotones 
B)  isotopes 
C)  isobars 
D)  isomers 
E)  isotherms 
A)  isotones 
B)  isotopes 
C)  isobars 
D)  isomers 
E)  isotherms

Question 17

Of the following quantities, which (if any) is not conserved in radioactive decay?

Accepted Answer

A)  energy 
B)  momentum 
C)  charge 
D)  angular momentum 
E)  All these quantities are conserved. 
A)  energy 
B)  momentum 
C)  charge 
D)  angular momentum 
E)  All these quantities are conserved.

Question 18

Which of the following nuclear reactions is forbidden?

Accepted Answer

A)    +
  →
  + 2
  
B)    +
  →
  
C)    +
  → 2
  
D)  n1 +   →
  n +
  o + 3 n1 
A)    +
  →
  + 2
  
B)    +
  →
  
C)    +
  → 2
  
D)  n1 +   →
  n +
  o + 3 n1

Question 19

A sample contains 1.000 × 10−3 g of 40K. The half-life of 40K is 1.250 × 109 years. What is the activity of the sample?

Accepted Answer

A)  3300 Bq 
B)  1250 Bq 
C)  382.0 Bq 
D)  265.0 Bq 
E)  3.000 Bq 
A)  3300 Bq 
B)  1250 Bq 
C)  382.0 Bq 
D)  265.0 Bq 
E)  3.000 Bq

Question 20

What is the binding energy of an alpha particle?

Accepted Answer

A)  2.20 MeV 
B)  50.0 MeV 
C)  28.3 MeV 
D)  21.2 MeV 
A)  2.20 MeV 
B)  50.0 MeV 
C)  28.3 MeV 
D)  21.2 MeV

Exam 29: Nuclear Physics

The tokamak is a device designed to produce

In the reaction 4He + 9Be → n + 12C, how much energy is released or absorbed? The masses of the neutral atoms are as follows: the mas of 4He is 4.0026033 u, the mass of 9Be is 9.0121831 u, the mass of n is 1.0086649 u, and the mass of 12C is 12.0000000 u.

When 241 Am decays by emitting an alpha particle of kinetic energy 5.5 MeV, what is the recoil energy of the daughter nucleus?

A nuclide whose "generic" symbol is would have how many protons and neutrons, respectively?

How many atoms are in one gram of ?

If a 60 kg person received a biologically equivalent dose of 1.7 rem of radiation with an RBE of 1.1, what was the total energy absorbed by the person?

A beam of gamma rays strikes a lead target with a half-value layer of 0.40 cm. What fraction of the photons in the beam will penetrate to a depth of 1.20 cm or more?

The majority of the average yearly radiation exposure from nonmedical sources, for people living in the United States, comes from

Of those elements listed below, the binding energy per nucleon reaches a maximum closest to

What is the binding energy per nucleon for 12C?

What is the volume of the nucleus?

How many neutrons are in a 35Cl nucleus?

For a sample of a given radioactive isotope, the ratio of the number of atoms of the isotope at time t to the number at time t + T1/2 is

If a nucleus has a volume of 1.0 × 10-42 m3, what is its mass number?

If a nuclide has a half-life of 100 s, what is the corresponding mean lifetime?

16O, 17O, and 18O are ________ of oxygen.

Of the following quantities, which (if any) is not conserved in radioactive decay?

Which of the following nuclear reactions is forbidden?

A sample contains 1.000 × 10−3 g of 40K. The half-life of 40K is 1.250 × 109 years. What is the activity of the sample?

What is the binding energy of an alpha particle?

Introduction

Motion Along a Line

Motion in a Plane

Force and Newtons Laws of Motion

Circular Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Particle Physics

Filters

In the reaction ⁴He + ⁹Be → n + ¹²C, how much energy is released or absorbed? The masses of the neutral atoms are as follows: the mas of ⁴He is 4.0026033 u, the mass of ⁹Be is 9.0121831 u, the mass of n is 1.0086649 u, and the mass of ¹²C is 12.0000000 u.

When ²⁴¹Am decays by emitting an alpha particle of kinetic energy 5.5 MeV, what is the recoil energy of the daughter nucleus?

What is the binding energy per nucleon for ¹²C?

How many neutrons are in a ³⁵Cl nucleus?

For a sample of a given radioactive isotope, the ratio of the number of atoms of the isotope at time t to the number at time t + T_1/2 is

If a nucleus has a volume of 1.0 × 10^-42 m³, what is its mass number?

¹⁶O, ¹⁷O, and ¹⁸O are ________ of oxygen.

A sample contains 1.000 × 10⁻³ g of ⁴⁰K. The half-life of ⁴⁰K is 1.250 × 10⁹ years. What is the activity of the sample?