levivader1063 levivader1063

18-03-2019
Advanced Placement (AP)

contestada

A radioactive isotope has a half-life of 40 years and a radioactivity level of 4 curies. How many years will it take for the radioactivity level to become 0.25?

Respuesta :

anikaraisa04 anikaraisa04

18-03-2019

it will take 160 years. >.<

Answer Link

Otras preguntas

Which of the following does not describe the slave trade as it existed in Africa by 1700?

Which immigrant group was excluded from the Immigration Quota Laws of 1924?

Please help me with problem 4 of a math problem

I don’t know which one

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! The purpose of fuses and circuit breakers is to

asap i need help fast

Which of the following describes cellular respiration?

After the booster club sold 40 hotdogs at a football game, it had $90 in profit. After the next game, it had sold a total of 80 hotdogs and had a total of $210

given y- x ≥ 2 and y ≤ -3x+2

Which airport is named after a wwii pilot