A radioactive substance is observed to disintegrate at a rate such that $\frac { 9 } { 10 }$ of the original amount remains after one year. What is the half-life of the substance?
A) 0.301 yr
B) 0.588 yr
C) 0.556 yr
D) 6.579 yr

Name: A radioactive substance is observed to disintegrate at a rate such that $\frac { 9 } { 10 }$ of the original amount remains after one year. What is the half-life of the substance? A) 0.301 yr B) 0.588 yr C) 0.556 yr D) 6.579 yr
Brand: Quizplus
Rating: 4.8 (39 reviews)

Question

Quizplus · Accepted Answer

The Answer is D

A Radioactive Substance Is Observed to Disintegrate at a Rate 910\frac { 9 } { 10 }109​

A Radioactive Substance Is Observed to Disintegrate at a Rate $\frac { 9 } { 10 }$