Jack was exposed to fast neutrons; he received a radiation dose of 140 rem on pa

Question

Jack was exposed to fast neutrons; he received a radiation dose of 140 rem on part of his hand, affecting 20.0 grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 12.0.

Part A

How much radiation did Jack receive?

Express your answer in rads to three significant figures.

SubmitHintsMy AnswersGive UpReview Part

Correct

Significant Figures Feedback: Your answer 11.667 rad was either rounded differently or used a different number of significant figures than required for this part. If you need this result for any later calculation in this item, keep all the digits and round as the final step before submitting your answer.

Part B

What was the total energy of the radiation Jack received?

Express your answer in joules to three significant figures.

.23

SubmitHintsMy AnswersGive UpReview Part

Incorrect; Try Again; 4 attempts remaining

Look again at the definition of a rad.

Part C

Suppose Jill received the same rad dosage, but from beta rays with an RBE of 1.50 instead of from neutrons. What is the value of the equivalent dose she received?

Express your answer in rems to three significant figures.

SubmitHintsMy AnswersGive UpReview Part

Jack was exposed to fast neutrons; he received a radiation dose of 140 rem on part of his hand, affecting 20.0 grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 12.0.

Part A

How much radiation did Jack receive?

Express your answer in rads to three significant figures.

11.7   rad  

SubmitHintsMy AnswersGive UpReview Part

Correct

Significant Figures Feedback: Your answer 11.667 rad was either rounded differently or used a different number of significant figures than required for this part. If you need this result for any later calculation in this item, keep all the digits and round as the final step before submitting your answer.

Part B

What was the total energy of the radiation Jack received?

Express your answer in joules to three significant figures.

.23

  J  

SubmitHintsMy AnswersGive UpReview Part

Incorrect; Try Again; 4 attempts remaining

Look again at the definition of a rad.

Part C

Suppose Jill received the same rad dosage, but from beta rays with an RBE of 1.50 instead of from neutrons. What is the value of the equivalent dose she received?

Express your answer in rems to three significant figures.

  rem  

SubmitHintsMy AnswersGive UpReview Part

Explanation / Answer

b) 1 rad = 0.01 J /Kg

11.7 rad= 0.117 J/kg

totral joules = 0.117 ( 20/1000) = 0.00234 J

c) Deq=11.7 (rad) * 1.5
Deq = 17.55 rem

Related Questions

Navigate

• Browse (All)
• Browse J
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.