# Recent content by Steph191290

1. ### Calculating effects of air resistance on a falling mass

thanks that will be great
2. ### Calculating effects of air resistance on a falling mass

Calculating effects of air resistance on a ball of mass 0.67kg, being dropped from a height of 4.93m. I have worked out theoretically what time it would take without air resistance using s=ut + 0.5at(squared) however i cannot find an equation that will factor in air resistance. thanks
3. ### Physics Chat

yeah its nice to just join in with random comments every now and then it was gd crack last night x
4. ### Physics Chat

fair enough gd stuff will speech on sunday then =]
5. ### Physics Chat

ahh ok thanx, can i ask why?
6. ### Physics Chat

Is the physics chat just open certain days or what?
7. ### Calculating decay constants and half-life

thanks lol, i do that alot it seems, better brush up on those skills before the exam lol.
8. ### Calculating decay constants and half-life

well i dont know what i did but i have just gotten the right answer thanks lol xx

9.03x10^15 x
10. ### Calculating decay constants and half-life

now i get 1.4448x10^15 which is still wrong, im so confused. x
11. ### Calculating decay constants and half-life

oops that should have been 10^23 lol, thanks i'll try that x
12. ### Calculating decay constants and half-life

A scientist wishes to find the age of a sample of rock. Realising that it contains radioactive potassium, which decays to give a stable form of argon, the scientist started by making the following measurments: decay rate of the potassium in the sample = 0.16Bq mass of potassium in the sample...
13. ### Opinions on determinism

But at the same time something must help us make our desicsions, possibly the chemicals in our body and if thats the case, our chemicals dont change therefore our choices are already made.
14. ### Opinions on determinism

yeah, basically do you believe that our path in life is already chosen.
15. ### Opinions on determinism

I am writing an essay on determinism, i was just wondering what peoples opinions on it are, my arguement is going to be that it is possible, but i would like to include other peoples opinions and reasons. Thanks Steph.