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...