Carbon-14 is a radioactive substance

A human body required 0.01 m activity of radioactive substance after 24 hours .Half li of radioactive substance is 6 hours .Then
1. 1 answer
2. asked by Aashika Jain
3. 884 views
Cosmic ray bombardment of the atmosphere produces neutrons, which in turn react w/ nitrogen to produce radioactive carbon-14.
1. 1 answer
2. asked by John
3. 852 views
Every week, 2/5 of a radioactive substance remains from an initial amount of 150mg.How many milligrams of the radioactive
1. 1 answer
2. 95 views
Juliet started working with a radioactive substance. In 1997, she started with 200 g. When she measured again in 2002, she had
1. 1 answer
2. 24 views
Juliet started working with a radioactive substance. In 1997, she started with 200 g. When she measured again in 2002, she had
1. 1 answer
2. 37 views
Grace starts with 100 milligrams of a radioactive substance. The amount of the substance decreases by 14each week for a number
1. 1 answer
2. 95 views
Nick starts with 20milligrams of a radioactive substance. The amount of the substance decreases by 1/2 each week for a number of
1. 1 answer
2. 116 views
Nick starts with 20milligrams of a radioactive substance. The amount of the substance decreases by 1/2 each week for a number of
1. 1 answer
2. 120 views
Demarco starts with 10 milligrams of a radioactive substance. The amount of the substance decreases by 40% each week for a
1. 3 answers
2. 83 views
Nick starts with 20 milligrams of a radioactive substance. The amount of the substance decreases by ½ each week for a number of
1. 1 answer
2. 82 views