shenaeleah shenaeleah

01-03-2021
Physics

contestada

A radioactive isotope has a half-life of 20 hours. How long will it take for 3/4 of the source to decay?

Respuesta :

odetayojomiloju odetayojomiloju

01-03-2021

Answer:

40 hours

Explanation:

in 20 hours, 1/2 will decay

in 40 hours, 1/4 will decay

therefore, 40 hours

Answer Link

Otras preguntas

which is required for sexual reproduction

I am reading Fallen angels and we have to a reading check and its on chapters 15-18 and this question on the worksheet is hard to answer can you help? Here is

African slaves were brought to the English colonies to meet the demand for a. soldiers brought about by wars with Native Americans b. Labor brought about by la

_____ is the process by which internal environments of an organism are regulated. -tropism -homeostasis -geotropism

What is the participial phrase in the sentence? As the tornado picked up speed, the debris, ripped apart by the wind, flew in different directions

Which Enlightenment philosopher promoted the principles of separation of church and state along with freedom of the press?

did the idea of a heliocentric view of the solar system originated with Copernicus?

why does the president usually urge voters to elect members of the president's own political party to congress

What is a reducing sugar?

show me how to convert 800mm to meters