perryjarvisr9285 perryjarvisr9285

03-05-2022
Physics

contestada

If the activity of a radionuclide decreases from 5,000 disintegrations per minute to 625 disintegrations per minute

in 12 hours, its half-life is?

Respuesta :

jsimpson11000 jsimpson11000

03-05-2022

Answer:

4 hrs

Explanation:

625 = 5000 (1/2)^n

625/5000 = 1/2^n

n = 3 half lives

3 half lives = 12 hours 1 half life = 4 hrs

Answer Link

Otras preguntas

what european mountain range did most crusaders cross

why was northern Italy a natural birthplace for the renaissance?

Is the product of 2/5 and 5 greater than or less than 2/5 is it greater than or less than 5

David and Denise share n pears in the ratio of 4:9. How many pears does Denise have in terms of n?

Which article of the Constitution lays out the roles and powers of the president? A. Article I B. Article II C. Article III D. Article IV

Which of the following is NOT a "reserved right" of Native American people on ceded land according to U.S. treaty? Select the best answer choice. A)Hunting B)Ga

Mr Atkinson has 5 1/4 lb of dry fish food. He will put an equal amount of food into 3 containers. How much fish food will be in each container.

394.6 divided by 9 using compatible numbers to estimate the quotient?

Which equation is a simplified version of 4a + 3b = 6b -9a

Weightlessness is experienced by an astronaut in space. This means that the astronaut's muscles have to be stronger to move his body or lift other objects. True