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Problem 4. Suppose that 70% of a radioactive substance is gone after 6.43 years. What is...

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Physics

Problem 4. Suppose that 70% of a radioactive substance is goneafter 6.43 years. What is the half life of this substance?

Question 1. What is N(t)/N0 in this problem? (2points)

a. unknown

b. there isn’t such a thing in this problem

c. .70

d. 6.43 years

e. the half life

Question 2. What is the decay constant in thisproblem? (3 points)

a. 1.76 years

b. 5.34 years

c. 9.76 years

d. 12.5 years

Question 3. Using the radioactive decayequation to find the half life, what should N(t)/N0 equal? (2points)

a. the half life

b. the decay constant

c. .50

d. none of the above

Question 4. What is the half life of thissubstance? (3 points)

a. 3.70 years

b. 2.62 months

c. 5.66 years

d. 11.4 years

Answer & Explanation Solved by verified expert
3.8 Ratings (631 Votes)
Q1 We have the general formula for the half life asNt No05tt half life 1So that here we are asking for NtN0 in this problem and wehave given    See Answer
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