Register
If the half- life of a sample of a radioactive substance is 30 seconds, how much would be left after 60 seconds ?
119k views
5 votes
If the half- life of a sample of a radioactive substance is 30 seconds, how much would be left after 60 seconds ?

User JackPearse
by
6.2k points

1 Answer

6 votes
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
User Seko
by
6.6k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

6.6m questions

8.7m answers

Other Questions

A ball is dropped from rest at height of 50m above the ground (a) What is its speed just before it hits the ground (b) How long does it take to rech the ground.
What is the objects motion from A to B?
What is the acceleration of an object with mass of 42.6 kg when an unbalanced force of 112 N is applied to it?
The___ is composed of Earth's crust and solid upper mantle A. Inner core B outer core C lithosphere D asthenosphere
What is one similarity and one difference between infrasound and ultrasound?
Link Copied!