Question 1

Photons associated with the magnetic field used in magnetic resonance imaging have considerably less energy than the photons used in CT scans.

Accepted Answer

A) True 
 B)False

Question 2

What is the approximate nuclear radius of an isotope of sodium with 11 protons and 12 neutrons?

Accepted Answer

The answer of What is the approximate nuclear radius of...

Question 3

If a nuclide has a decay constant of 0.765 × 10-6 s-1 and contains 3.0 × 1017 nuclei
(a) what is the half life?
(b) what is its initial activity?
(c) what is the activity after 12. days?

Accepted Answer

(a)9.06 × 10⁵ s (b)2.

Question 4

What is the density of the nucleus of 90Sr?

Accepted Answer

A)  greater than 3 × 1020 kg/m3 
B)  90 kg/m3 
C)  2.1 × 1019 kg/m3 
D)  2.0 × 1015 kg/m3 
E)  2.3 × 1017 kg/m3 
A)  greater than 3 × 1020 kg/m3 
B)  90 kg/m3 
C)  2.1 × 1019 kg/m3 
D)  2.0 × 1015 kg/m3 
E)  2.3 × 1017 kg/m3

Question 5

The nuclei of different isotopes of a given element have the same number of

Accepted Answer

A)  protons. 
B)  neutrons. 
C)  nucleons. 
D)  electrons. 
E)  positrons. 
A)  protons. 
B)  neutrons. 
C)  nucleons. 
D)  electrons. 
E)  positrons.

Question 6

Polonium-215 alpha decays with a half life of 1.8 ms.
(a) How much is left after 1. second?
(b) What is the daughter nucleus?

Accepted Answer

(a)fraction remainin

Question 7

A stationary plutonium-239 nucleus decays into a uranium-235 nucleus plus an alpha particle. The energy released in the process is 5.24 MeV. Given the following mass values:   , 4.002603 u;   , 235.043924 u; what is the kinetic energy of the   nucleus?
1 u =931.494 MeV/c2.

Accepted Answer

A)  0.0829 MeV 
B)  0.0837 MeV 
C)  0.0852 MeV 
D)  0.0863 MeV 
E)  0.0877 MeV 
A)  0.0829 MeV 
B)  0.0837 MeV 
C)  0.0852 MeV 
D)  0.0863 MeV 
E)  0.0877 MeV

Question 8

Rutherfordium-261 has a half-life of 1.08 min. How long will it take for a sample of rutherfordium to lose one-third of its nuclei?

Accepted Answer

A)  1.02 min 
B)  1.62 min 
C)  0.63 min 
D)  2.70 min 
E)  3.24 min 
A)  1.02 min 
B)  1.62 min 
C)  0.63 min 
D)  2.70 min 
E)  3.24 min

Question 9

The nuclei of   are also known as

Accepted Answer

A)  α particles. 
B)  β particles. 
C)  γ rays. 
D)  X-rays. 
E)  K-rays. 
A)  α particles. 
B)  β particles. 
C)  γ rays. 
D)  X-rays. 
E)  K-rays.

Question 10

What are the mass number and the atomic number for each of the following:
(a) beta+?
(b) beta-?

Accepted Answer

Question 11

The symbol for deuterium is   . How many protons are there in a deuterium nucleus?

Accepted Answer

The answer of The symbol for deuterium is  ...

Question 12

The strong nuclear force acts only on neutral particles.

Accepted Answer

A) True 
 B)False

Question 13

What type of scan is used to find the areas of the body where glucose metabolism is most intense?

Accepted Answer

A)  PET scans 
B)  CT scans 
C)  MRI 
D)  radioactive iodine tracers 
A)  PET scans 
B)  CT scans 
C)  MRI 
D)  radioactive iodine tracers

Question 14

A fusion reaction works because the binding energy of the resulting nucleus

Accepted Answer

A)  is greater than the binding energy of the original nuclei. 
B)  is equal to the binding energy of the original nuclei. 
C)  is less than the binding energy of the original nuclei. 
D)  is released in the process. 
E)  is absorbed in the process. 
A)  is greater than the binding energy of the original nuclei. 
B)  is equal to the binding energy of the original nuclei. 
C)  is less than the binding energy of the original nuclei. 
D)  is released in the process. 
E)  is absorbed in the process.

Question 15

The radius of a nucleus is proportional to what power of the mass number?

Accepted Answer

A)  1/2 
B)  1/3 
C)  1/4 
D)  2/5 
E)  3/8 
A)  1/2 
B)  1/3 
C)  1/4 
D)  2/5 
E)  3/8

Question 16

One mole of Strontium-90 is decaying with a half life of 28. years. After 61. years, how much Strontium is left and what is its activity?

Accepted Answer

0.22 mole; 5.5 × 10^-³

Question 17

Complete the following nuclear decay equation:
   + ________ →

Accepted Answer

The answer of Complete the following nuclear decay equation:
 ...

Question 18

The number of quarks in a deuteron (2H) is

Accepted Answer

A)  1. 
B)  2. 
C)  3. 
D)  4. 
E)  6. 
A)  1. 
B)  2. 
C)  3. 
D)  4. 
E)  6.

Question 19

The weakest of the four fundamental forces is

Accepted Answer

A)  the weak nuclear force. 
B)  the electromagnetic force. 
C)  the gravitational force. 
D)  the strong nuclear force. 
A)  the weak nuclear force. 
B)  the electromagnetic force. 
C)  the gravitational force. 
D)  the strong nuclear force.

Question 20

A fusion reaction generates energy by combining lighter nuclei into a heavier nucleus, plus additional particles.

Accepted Answer

A) True 
 B)False

Exam 32: Nuclear Physics and Nuclear Radiation

Photons associated with the magnetic field used in magnetic resonance imaging have considerably less energy than the photons used in CT scans.

What is the approximate nuclear radius of an isotope of sodium with 11 protons and 12 neutrons?

If a nuclide has a decay constant of 0.765 × 10-6 s-1 and contains 3.0 × 1017 nuclei (a) what is the half life? (b) what is its initial activity? (c) what is the activity after 12. days?

What is the density of the nucleus of 90Sr?

The nuclei of different isotopes of a given element have the same number of

Polonium-215 alpha decays with a half life of 1.8 ms. (a) How much is left after 1. second? (b) What is the daughter nucleus?

A stationary plutonium-239 nucleus decays into a uranium-235 nucleus plus an alpha particle. The energy released in the process is 5.24 MeV. Given the following mass values: , 4.002603 u; , 235.043924 u; what is the kinetic energy of the nucleus? 1 u =931.494 MeV/c2.

Rutherfordium-261 has a half-life of 1.08 min. How long will it take for a sample of rutherfordium to lose one-third of its nuclei?

The nuclei of are also known as

What are the mass number and the atomic number for each of the following: (a) beta+? (b) beta-?

The symbol for deuterium is . How many protons are there in a deuterium nucleus?

The strong nuclear force acts only on neutral particles.

What type of scan is used to find the areas of the body where glucose metabolism is most intense?

A fusion reaction works because the binding energy of the resulting nucleus

The radius of a nucleus is proportional to what power of the mass number?

One mole of Strontium-90 is decaying with a half life of 28. years. After 61. years, how much Strontium is left and what is its activity?

Complete the following nuclear decay equation: + ________ →

The number of quarks in a deuteron (2H) is

The weakest of the four fundamental forces is

A fusion reaction generates energy by combining lighter nuclei into a heavier nucleus, plus additional particles.

Introduction to Physics

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If a nuclide has a decay constant of 0.765 × 10^-⁶ s^-1 and contains 3.0 × 10¹⁷ nuclei (a) what is the half life? (b) what is its initial activity? (c) what is the activity after 12. days?

What is the density of the nucleus of ⁹⁰Sr?

A stationary plutonium-239 nucleus decays into a uranium-235 nucleus plus an alpha particle. The energy released in the process is 5.24 MeV. Given the following mass values: , 4.002603 u; , 235.043924 u; what is the kinetic energy of the nucleus? 1 u =931.494 MeV/c².

What are the mass number and the atomic number for each of the following: (a) beta⁺? (b) beta^-?

The number of quarks in a deuteron (²H) is