Recent content by carl

confused about quantum gravity theory? I know that quantum gravity is used to describe the effects of the gravitational interaction under differentg circumstandes, But can anyone please explain,under what circumstances is the theory appropriate, also some examples of the phenomena that are...

Can you please explain how the beta-plus decay process may be understood (i) at the level of individual nucleons and (ii) at the level of quarks, by writing a decay reaction in each case.

-------------------------------------------------------------------------------- the maximum kinetic energy of a photoelectron, Ek,max , to the smallest amount of energy, E0, needed to free an electron from the metal, and the energy, Eph , of the incident photons of light: Ek,max = Eph –...

GMST scenarios ..please help Hey how you doing? Can anyone tell me 2 scenarios that could possibly lead to no overall change in GMST in this way please. I think (1) and (3) might be right? (1) The fraction of Earth's surface covered with ice and snow decreases while the albedo of the...

Ok I get 2.85714 and another load of figures afterwards. Now I am more confused than ever. Surely i now need to round off to nearest decimal figure. Can you also please explain uncertainty to me as i have absolutely no idea whatsoever.

Hi CRGreathouse Please give me 5 mins and I am going to start working it all out again and get back with what i think is correct.

This is how i got my answer. In order to get my mean, i added all those figures together and divided it by 7 and got the answer of 2.6. Then i chose 0.5 for my uncertainty value. Whilst i honestly thought my mean figure was correct, I am very unsure of what this uncertainty value means. Hope...

The table shows results for precipitation (rainfall) obtained with a home-made rain gauge over 7 consecutive days. The measurements were made at 7.30 am on each day, and the values given indicate the depth of water collected in the previous 24 hours. The original measurements were made to the...