Recent content by Rev. Cheeseman

Sorry, where did 9.8 figure came from?

Thank you so much, guys.

If we want to find just the force and assuming we want to find the force to push the 24 tonne truck in one second over a distance of one foot, is it around 1.5 tonne?

The acceleration in one second over one foot distance is 0.6096 m/s2. So, F=m⋅a=24,000×0.6096=14,630.4N Therefore, the force required to move a 24-tonne truck one foot in one second (from rest): Force = 14,630.4 N ≈ 3,289.5 lbf ≈ 1.492 tonnes-force Is that correct?

Sorry, what is SF? I think F stand for fission but what is S? Those 87Rb don't need minutes or hours to become 88Rb if they are exposed to neutron rays?

So the moment an amount of 87Rb are exposed to neutron radiation they immediately become 88Rb which in turn become 88Sr after around 18 minutes? Those 87Rb don't need minutes or hours to become 88Rb if they are exposed to neutron rays?

Thank you. If rapid processes happen below years, what about slow processes? Sorry, English is not my native language

Is this correct? Rapid processes at outer space happen , for example, when a neutron ray hit those asteroid belts and then some elements capture those neutrons and change into different isotopes. While slow processes happen on Earth by the same radiation that is produced during thunderstorms...

Sorry, do you mean Rb-87

Therefore, 88rb is trace in natural abundance or?

Thank you. R process stand for rapid process and s process is slow, is not it? I can't remember exactly

Therefore, that usually happens outside the Earth then.

So, that usually happens outside the Earth then. Sorry, it is not me who moved this question into a new thread. I believe it is a mod who did that as I received a notification that this question was moved into a new thread.

88rb wasn't there

According to https://www.osti.gov/servlets/purl/1414348, it was stated 'Nevertheless, at high neutron densities, up to 54 % of the total 85Kr captures a neutron, generating 86Kr, eventually leading to an enrichment of 88Sr (Fig. 5). However, at least 46 % of the 85Kr decays to 85Rb, which could...