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Thanks i knew it. But wasn't able to put as the examiner wanted it.
Okay. You're welcome.
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Thanks i knew it. But wasn't able to put as the examiner wanted it.
I am having problem with moments. Especially stable,neutral and unstable equilibrium..plx help!!!!!!!!!!
For this, first you need to know what heat capacity is. Heat capacity is the amount of energy required for a substance to change it's tempeature by 1 degree C. And when you refer to heat capacity, you are always talking about the temperature change with respect to the amount of substance. For example, the heat required for 1g of a substance to change its temperature by 1 degree C is its specicific heat capacity which is denoted by 'c'.princevegeta: Q9 = A = Pb3O4 + 4HNO3 → 2Pb(NO3)2 + PbO2 + 2H2O
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Can someone please explain Specific Latent Heat and Vaporisation and Specific Heat Capacity along with their subsequent equations? That is the only thing I don't understand in Thermal Physics. And can someone please help me understand sound and light and mention their formulas please?
Thanks. And one last thing, no attachments of notes. Thanks again ^_^
[*] If sin i = critical angle refraction occurs
[*] If sin i > critical angle (more than) total internal reflection occurs
[*] If sin i < critical angle (bends at 90*)
Then there's the convering lense and convexing lense I which know.
Help with above ^_^
For the definitions part, you are correct. Sorry, I don't understand which second one are you talking about. If you are asking about the formulas for latent heat of fusion then the formula is L(f)= l(f)*m. Here 'L' represnets the latent heat fo fusion and 'l' for latent heat for fusion and 'm' for mass. This formula is applied to latent heat of vapourisation as well.Ok so specific heat capacity is the amount of energy required to raise the temperature of 1kg of a substance by 1* and the specific latent heat of fusion is the amount of energy needed to change the state of 1kg of a solid to a liq or liq to solid and specific latent heat of fusion is the same but for liq & gases.
For the first one: E = mc(Delta)T
For the second one: (Power*Time)/Mass
Correct?
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And for waves:
[*] Transverse Waves are waves that travel perpindicular to the direction of the force. EG: Light
[*] Longtitudinal Waves are waves that travel parallel to the direction of the force. EG: Sound
Electromagnetic spectrum BLABLABLA I already know
[*] Angle i = r
[*] n = sin i/sin r
[*] Air -> Glass (light slows down and bends towards the normal)
[*] Glass -> Air (light speeds up and bends away from the normal)
[*] If sin i = critical angle refraction occurs
[*] If sin i > critical angle (more than) total internal reflection occurs
[*] If sin i < critical angle (bends at 90*)
Then there's the convering lense and convexing lense I which know.
Help with above ^_^
To tackle such questions, you need to know the tests for colours and identification of ions and gases thoroughly. If you can get hold of the book by Presscott read the Acids, bases, salts and identification of ions and gases from this book, you'll soon get your doubts clear.http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s12_qp_61.pdf
CHEMISTRY PAPER 6 Q5 HELP NEEDED HOW DO U SOLVE IT PLEASE I HAVE AN EXAM TOMORROW PLEASE HELP FAST!!!!!!!!!!!!!!
HOW DO U DO QUESTIONS SIMILAR LIKE THESE.
Srry but i was absent for school few days and i missed the class about qualitative analysis.Now i read the printed notes but cant understand anything and the teacher wont explain again to me So please help me as far as u can
THX IN ADVANCE
Tests for Gases:
GasFormulaTests
Ammonia NH3 Turns damp red litmus paper blue
Carbon dioxide CO2 Turns limewater milky
Oxygen O2 Relights a glowing splint
Hydrogen H2 ‘Pops’ with a lighted splint
Chlorine Cl2 Bleaches damp litmus paper
Nitrogen dioxide NO2 Turns damp blue litmus paper red
Sulfur dioxide SO2 Turns acidified aqueous potassium dichromate(VI) from orange to green
Tests for Anions:
AnionTestResult
Carbonate (CO32-) Add dilute acid Effervescence,
carbon dioxide produced
Chloride (Cl-)
(in solution) Acidify with dilute nitric acid, then add
aqueous silver nitrate White ppt.
Iodide (I-)
(in solution) Acidify with dilute nitric acid, then add
aqueous silver nitrate Yellow ppt.
Nitrate (NO3-)
(in solution) Add aqueous sodium hydroxide, then
aluminium foil; warm carefully Ammonia produced
Sulfate (SO42-) Acidify, then add aqueous barium nitrate White ppt.
Tests for aqueous cations:
CationEffect of aqueous sodium hydroxideEffect of aqueous ammonia
Aluminium (Al3+) White ppt., soluble in excess giving a
colourless solution White ppt., insoluble in excess
Ammonium (NH4+) Ammonia produced on warming –
Calcium (Ca2+) White ppt., insoluble in excess No ppt. or very slight white ppt.
Copper (Cu2+) Light blue ppt., insoluble in excess Light blue ppt., soluble in excess,
giving a dark blue solution
Iron(II) (Fe2+) Green ppt., insoluble in excess Green ppt., insoluble in excess
Iron(III) (Fe3+) Red-brown ppt., insoluble in excess Red-brown ppt., insoluble in excess
Zinc (Zn2+) White ppt., soluble in excess,
giving a colourless solution White ppt., soluble in excess,
giving a colourless solution
i think u are confusing destarching with 'killing' the leaf'Umm can someone help explain to me, how you can perform the dependency of certain variables for photosynthesis after destartching? Because don't the cells in the leaves die when boiled?
the question saysA box of 40 kg is being pushed up a 2.0m inclined plane. What is the work done by the 250N force when the box reaches the top of the inclined plane which is 1.0m above the ground?
I've applied the formula Work done=force x distance and got 500J (which is right), but i was thinking that the formula W=mgh could be applied as the plane is inclined and there is some height" and gravitational potential energy and so by this formula i got 400J (which appearently is wrong) , so how can i distinguish between these formulas??? and why isn't W=mgh the right one?
Can we use calculator in Physics Extended 0625?
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