Recent content by Wing2015

Homework Statement A sample containing carbon-14 has 16000 decays per minute. If the half life of carbon-14 is 5730 years. Aproximately how many decays per minute would be occurring after another 50 000 years. Answer: approximately 40 decays per minute. Homework Equations N= No x e^-λt...

Thanks for your replies! I get it now. There was a problem with the way I sketched the problem which was the reason why I wasn't able to understand. Cheers

Homework Statement How much of a wall 3m behind you can be observed in a 5 cm square mirror which is held centrally at a distance of 10 cm from your eye? Homework Equations None that I can think of. I think this is straight geometry. The Attempt at a Solution I know I have to use similar...