Suppose a radioactive substance decays according to the formula . How long will it take for the substance to decay to half the original amount?
A) It will take 40 years for the substance to decay to half the original amount.
B) It will take 5,170 years for the substance to decay to half the original amount.
C) It will take 5,281 years for the substance to decay to half the original amount.
D) It will take 5,626 years for the substance to decay to half the original amount.

Question

Suppose a radioactive substance decays according to the formula  . How long will it take for the substance to decay to half the original amount?
A) It will take 40 years for the substance to decay to half the original amount. 
B) It will take 5,170 years for the substance to decay to half the original amount. 
C) It will take 5,281 years for the substance to decay to half the original amount. 
D) It will take 5,626 years for the substance to decay to half the original amount.

Quizplus · Accepted Answer

The Answer of Suppose a radioactive substance decays according to the formula  . How long will it take for the substance to decay to half the original amount?
A) It will take 40 years for the substance to decay to half the original amount. 
B) It will take 5,170 years for the substance to decay to half the original amount. 
C) It will take 5,281 years for the substance to decay to half the original amount. 
D) It will take 5,626 years for the substance to decay to half the original amount.

Suppose a Radioactive Substance Decays According to the Formula