Question 1

The process during which small nuclei combine to form larger ones is referred to as

Accepted Answer

A)  nuclear fission.
B)  nuclear fusion.C) A) and B)
D) undefined

Question 2

PET is an abbreviation for

Accepted Answer

A)  photon-electron tunneling.
B)  positron emission tomography.
C)  photon emission tunneling.
D)  photon emission tomography.
E)  pericranial electromagnetic technique.F) A) and E)
G) A) and D)

Question 3

The Q value for a particular reaction is -2.4 MeV, and the reaction's threshold energy is 9.60 MeV. What is the ratio of the mass of the incident particle to the mass of the stationary target nucleus?

Accepted Answer

A)  -0.75
B)  0.25
C)  3
D)  4
E)  5F) B) and C)
G) B) and E)

Question 4

A unit that measures the effective dose of radiation in a human is the

Accepted Answer

A)  curie.
B)  RBE.
C)  rad.
D)  rem.
E)  sievert.F) All of the above
G) A) and E)

Question 5

A nuclear reaction is said to be exothermic if the total kinetic energy is

Accepted Answer

A)  less after the reaction than before.
B)  equal both before and after the reaction.
C)  greater after the reaction than before.
D)  zero after the reaction.E) A) and B)
F) C) and D)

Question 6

If the Q-value is less than zero for a nuclear reaction, the reaction is

Accepted Answer

A)  exoergic.
B)  endoergic.
C)  endothermic.
D)  exdoergic.
E)  not possible.F) A) and C)
G) A) and B)

Question 7

In the fissioning of uranium, the typical amount of energy released per nucleon is

Accepted Answer

A)  0.025 eV.
B)  100 MeV
C)  0.9 MeV.
D)  200 MeV.
E)  10 MeVF) B) and D)
G) C) and D)

Question 8

Determine the missing product X in the reaction:  +  → X + 2(  )

Accepted Answer

The answer of Determine the missing product X in the...

Question 9

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 C)
G) A) and E)

Question 10

How does the mass of the products of a nuclear fusion reaction compare to the mass of the original elements?

Accepted Answer

A)  greater
B)  less
C)  the same
D)  varies according to the reactionE) None of the above
F) A) and B)

Question 11

The isotope 99m Tc (half-life of 6.0 hours)  is used in bone scans. How long does it take a quantity of 99m Tc to reduce to 1% of its initial activity?

Accepted Answer

A)  0.06 hours
B)  3.3 hours
C)  33 hours
D)  40 hours
E)  slightly more than one monthF) C) and D)
G) All of the above

Question 12

The thermal neutron cross section of a proton is 0.33 bn. If this cross-section were to represent the circular cross-sectional area of the proton presented to the neutron beam, what would be the radius of the proton?

Accepted Answer

A)  1.2 x 10-15 m
B)  1.6 x 10-15 m
C)  3.2 x 10-15 m
D)  4.1 x 10-15 m
E)  5.2 x 10-15 mF) A) and B)
G) A) and E)

Question 13

Determine the missing reaction product:
 1n + 235U = 141Ba + ________ + 3(1n )

Accepted Answer

Question 14

If a reactor produces an average power of 1000 MW for a year, how much mass is turned into energy?

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 E)
G) A) and D)

Question 15

The chief hazard of radiation damage to living cells is

Accepted Answer

A)  due to ionization.
B)  due to heating.
C)  due to the creation of chemical impurities.
D)  the creation of new isotopes within the body.E) C) and D)
F) B) and D)

Question 16

Complete the following nuclear reaction:  +  → ________ +

Accepted Answer

The answer of Complete the following nuclear reaction:  +...

Question 17

Discuss why it is impossible for a particle to decay into a single particle of less mass.

Accepted Answer

Observe the decay from the rest frame of...

Question 18

The process during which a heavy nucleus such as uranium splits into two intermediate-sized nuclei after being struck by a neutron is referred to as

Accepted Answer

A)  nuclear fission.
B)  nuclear fusion.C) A) and B)
D) undefined

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

A chain reaction can occur

Accepted Answer

A)  in any uranium core.
B)  when critical mass is reached.
C)  when critical mass is exceeded.
D)  in the center of the Sun.
E)  when the coolant is too hot.F) A) and B)
G) A) and E)

Exam 42: Nuclear Energy: Efects and Uses of Radiation

A chain reaction can occur

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The process during which small nuclei combine to form larger ones is referred to as

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The thermal neutron cross section of a proton is 0.33 bn. If this cross-section were to represent the circular cross-sectional area of the proton presented to the neutron beam, what would be the radius of the proton?

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In the fissioning of uranium, the typical amount of energy released per nucleon is

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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?

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The process during which a heavy nucleus such as uranium splits into two intermediate-sized nuclei after being struck by a neutron is referred to as

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

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PET is an abbreviation for

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The isotope 99m Tc (half-life of 6.0 hours) is used in bone scans. How long does it take a quantity of 99m Tc to reduce to 1% of its initial activity?

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If the Q-value is less than zero for a nuclear reaction, the reaction is

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The Q value for a particular reaction is -2.4 MeV, and the reaction's threshold energy is 9.60 MeV. What is the ratio of the mass of the incident particle to the mass of the stationary target nucleus?

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Discuss why it is impossible for a particle to decay into a single particle of less mass.

Correct AnswerverifiedObserve the decay from the rest frame of...View AnswerShow Answer

Determine the missing product X in the reaction: + → X + 2( )

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Determine the missing reaction product: 1n + 235U = 141Ba + ________ + 3(1n )

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The chief hazard of radiation damage to living cells is

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If a reactor produces an average power of 1000 MW for a year, how much mass is turned into energy?

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Complete the following nuclear reaction: + → ________ +

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A nuclear reaction is said to be exothermic if the total kinetic energy is

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How does the mass of the products of a nuclear fusion reaction compare to the mass of the original elements?

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A unit that measures the effective dose of radiation in a human is the

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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?

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Observe the decay from the rest frame of...
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Determine the missing reaction product: ¹n + ²³⁵U = ¹⁴¹Ba + ________ + 3(¹n )

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