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

How can the distributive property be used to find 4x875?draw an array.

A camera is an example of ____. a. an experiment c. technology b. a robot d. a scientific method

President Truman sent a fleet of ships to what island in 1949 to protect it from Red China?

What is the name of the period that has the digits 913,256.

Which equation is related to the equation shown? x + 3 = 12 A. x = 12 + 3 B. x = 12 ÷ 3 C. x = 12 − 3 D. x = 12 • 3

_____ phase is the period of interphase when genetic information is being duplicated. M phase G1 phase G2 phase S phase

The phase of cell division in which chromosomes align on the spindle equator halfway between the spindle poles is A. prophase. B. telophase. C. anaphase. D. me

Wind direction is determined by the Earth’s rotation. true or false?

Cheese sticks that were previously priced at 5 for $1 are now four for $1 find the percent decrease in the number of cheese sticks you can buy for $1

C6H12O6 is a type of protein carbohydrate amino acid polymer