Physics - Nuclear Physics (18 of 22) Biological Effects of Radiation (Self Radiation)

[@malachydonohue2745]

I have watched all of your videos in the series; you are awesome! Thank you for the great series.

[@Physics-Learner-fs8xd]

michel what are the true numbers in the carbon-14 over carbon total ratio?

[@MichelvanBiezen]

The number of carbon-14 atoms in a sample of carbon atoms is about 1 in a trillion.

[@Physics-Learner-fs8xd]

@@MichelvanBiezen why is it 1.33x10^12 instead of 1x10^12?

[@MichelvanBiezen]

I did write "about". If you need to know the exact number, you can easily find that on the internet.

[@malachydonohue2745]

At 7:20 of video you state that C-14 has 2960 decays per second and each decay spits out an alpha particle. The decay is Beta decay.

[@malachydonohue2745]

The gray units are J/kg; if you had used that unit in your equations you would not have forgotten to multiply by the body mass of 75 kg. You wrote gray as J/sec and not J/kg.

[@ciscachika2836]

Hello and thanks for the video. In the video clip, i do not seam to understand how you converted the dose from 7.4x10^ -11j/sec to 7.4x10^ -11Gy/s. I thought you were supposed to divide 7.4x10^ -11j/sec by 75kg to get a dose rate of 9.85x10^ -13 Gy/sec. Thanx

[@mdazizulislam9993]

it was a mistake. there should be divide by 75 kg. that he did in the last line.

[@Daan87423]

8:07 I think there's a zero missing in the numerator

[@mdazizulislam9993]

can you provide me few math problems with space shuttle or power plant fuel related?