Question

what pattern can I say in my courswork about radiation in smoke alarms using numerical?

Answer 1

If the analysis you posted is the correct one, you have an exponential decay, which is exactly what is expected for ANY radioactive material, but I would make a suggestion. Time is your independent variable it needs to be on the x-axis. you do not control time, therefore it has no business being on the y axis. So though your graph is correct, it is showing representing what is going on incorrectly. Actually, the only thing that is wrong is your axis are labelled incorrectly. you have plotted it correctly, but your axises need to be called x-axis time, y-axis counts per minute.

Also, I would use excel to find what the expiremental decay factor is and compare it with your known value. Just a hint on what to do if you want extra points. It is very simple use excel to fit the exponetial curve and then see what the exponent of e is.

Answer 2

oh yeah thank you for noticing that :) i have another question- I gave my science c/w to my science teacher to check but he said that my adv and dis is too short and has to be 1 and 3/4 sides of A4. i have only done a page including my opinion on if smoke alarms is good. So please can you let me know any adv and dis of smoke alarms, i will attach what i have done so far.

Answer 3

what is c/w?

Answer 4

Well, I think you might want to touch on the topic on that smoke alarms not only help with fire/smoke but also with CO_{2}, CO and order possibly deadly chemicals. I would also suggest discussing the differente types of Smoke Detectors and why one may be better than other (take a look at the Wikipedia page)

Also you need to elaborate ALOT. In a conclusion you should read every sentence and ask yourself does it answer the question why and HOW? I noticed you give a lot of blanket statements and provide no support for your claim, so when you say things like "be heard from a far distance if in a big building such a in an office or an industrial factory". How can it be heard? why can it be heard? How far can a smoke detector be heard? does the density of the smoke effect the it will be heard, is a negative or positive effect? Re-read your arguements and elaborate. It will help you get to that 1.75 pages, but it will also help you provide a stronger conclusion.