garsemi55 garsemi55
  • 02-05-2017
  • Physics
contestada

If the half- life of a sample of a radioactive substance is 30 seconds, how much would be left after 60 seconds ?

Respuesta :

egenriether
egenriether egenriether
  • 02-05-2017
after 30 seconds half is left.  After 30 more seconds, half of that much will be left (25%) or 1/4 of the original amount
Answer Link

Otras preguntas

what is the relationship between space peace and war
A coin is tossed 2 times. find the probability that all 2 tosses are tails
I’m stuck on this, what would be the answer?
Oliver is working on a puzzle of the Eiffel Tower. The tower in the puzzle is 28.5 in. tall. The packaging lists the scale as 1:415. What is the height of the a
why do tropical cyclones spawn around ? please include 5 sentences
four workers are hired to weed a field by hand. each is given a plot which is 10 x 7 ft in size. what is the total area of the field?
is a scientific hypothesis accepted if there is no way to demonstrate that the hypothesis is wrong
How many terms are in the expression shown below? a2 - ab + 8b + b2 - 1 2 3 4 5
Gardner and his associates are known for proposing ________.
5+4g+8=1 (g=-3;g =-1; g =2)