Recent content by Janka

Hello Kushal Hi Kushal, thanks a lot for your help, i was doing this calculations again this year, it really helped me, Thank you !

Hello ! Could I set up just simple electric circuit instead of that quarter-bridge strain gauge one? Can I just connect my foil strain gauge to power pack, and just connect ampmeter to circuit, also voltmeter around my strain gauge? I then i would use only simple formula like R=V/I to...

3.Cooper(II) Chloride is CuCl2 It` s already written Copper(II), that means you have copper with oxidation number +2 Chlorine element is HALOGEN, the same like eg. fluorine, bromine, iodine. They all have oxidation number -1. Now when you know oxidation number of both elements, you just...

Could anybody help me please? :cry If I have quarter- bridge strain gauge circuit, where strain gauge will have its initial resistance and i will add another 3 resistors, 1 on the same side like strain gauge, and another 2 on the opposite side, so I will balance circuit and my voltmeter...

Guys? could you somebody look at it please, i urgently need your help.Thanks again.

please , i need some help :cry: I`ve got the same physics planning exercise and now i am totally confused and I do not know what to do. I was thinking about attaching my foil strain gauge to piece of wood and then to set up guarter bridge circuit where on resistor would be at the same...

thank you...i ve been there...i don t know why is ocr web page so stupid... there are only 2 mark schemes from January 2007 and i think 2 exam paper question from January 2005...nothing more. is there any other web page where i could find it...i am so unhappy.

Hello People! Could somebody help me? i am looking for OCR exam AS past papers + mark schemes for last 7 years but i need some other web page where i can get it free...not www.orc.org.uk i am really dissapointed because i need to fine them and what i really need...

Hello people...could u help me pls...coz i am rly stuck in these thing like calculations...i know all right answers but i am not too sure how to get them...please if somebody of us has a few minutes could u help me with that? Thank you very much. 1., When 0.25 g of sodium metal was added...

calculation...could somebody help me please? Hello people...could u help me pls...coz i am rly stuck in these thing like calculations...i know all right answers but i am not too sure how to get them...please if somebody of us has a few minutes could u help me with that? Thank you very much...

oki doki...sorry i didn t know about this rule.

What you think about this calculation : (iii) Calculate the volume , in dm3 , of 5 M NaOH which contains this number of moles. I used this formula: amount of substance, in mol= concentartion x ( volume of solution / 1000) 1020 = 5 M x ( V / 1000 )...

Hello people...could u help me pls...coz i am rly stuck in these thing like calculations...i know all right answers but i am not too sure how to get them...please if somebody of us has a few minutes could u help me with that? Thank you very much. 50 kg of pure sulphuric acid were...

Hello people...could u help me pls...coz i am rly stuck in these thing like calculations...i know all right answers but i am not too sure how to get them...please if somebody of us has a few minutes could u help me with that? Thank you very much. Azides are compounds of nitrogen , used...

Hello people...could u help me pls...coz i am rly stuck in these thing like calculations...i know all right answers but i am not too sure how to get them...please if somebody of us has a few minutes could u help me with that? Thank you very much. 1., When 0.25 g of sodium metal was added...