00:01question number one is chapter twenty seven nuclear physics
00:07and everything is available on our channel
00:11if you have any questions for me
00:14number zero three two one two seven one double six five four
00:20we can add our whatsapp group
00:22nine days
00:25and number of radioactive nuclear degrees
00:29one eight
00:30number
00:33present initially
00:34so
00:36half life days
00:37so
00:38half life
00:41data
00:41solution
00:44one by eight
00:46one by eight
00:47one upon two
00:48two
00:51number of powers
00:53three
00:54so
00:55half life
00:56so
00:56half life
00:58so
00:59it means
01:02number of half life
01:04so
01:05half life
01:06together
01:06time divided by number of half life
01:08so time
01:09nine days
01:09number of half life
01:11three
01:12nine upon three
01:13three
01:13three
01:13two
01:14five
01:14three
01:14five
01:14six
01:14seven
01:14seven
01:14six
01:14seven
01:14I
Comments