| |
| 2008-10-31 |
| Stealth: 23:30 |
| Popye which skul u frm? |
| V. Gokal: 18:03 |
| Ok! |
| PopeyePrin: 16:21 |
| hey sir. could you please explain a little about electromagnetism on saturday or sunday at tution for grade 11? our teacher is doing it with us in school, but he doesn't explain, he just reads the textbook to us. thanx sir |
| |
| 2008-10-27 |
| Tish: 20:58 |
| in reaction rates 2..watz d ansa 4 no.11 n 13 |
| |
| 2008-07-31 |
| sound: 19:29 |
| Oh & why does sound waves travel faster in solids? Is it just because of density and elasticity? |
| sound: 17:57 |
| Hi sir can u pls give me the definitions of Fundamental vibration and standing waves thanx a mil :-) |
| |
| 2008-07-11 |
| V. Gokal: 15:43 |
| Ok Wondergirl. |
| |
| 2008-07-10 |
| WonderGirl: 16:29 |
| Hi sir i have an assignment on pressure. Plz xplain hw the changes of volume n pressure of pneumatic systems r being used in braking systems?n wats the advantage . Tanx a milion |
| |
| 2008-06-22 |
| Mo111: 20:52 |
| Thanx sir |
| V. Gokal: 19:48 |
| Hello. Oxygen as an element is O. But most of the time we speak of oxygen gas which is a molecule with the formula O2. Often only the word "oxygen" is used, but really means "oxygen gas", hence O2. |
| Mo111: 13:35 |
| Hey mr g, id lyk 2 knw when askd a questi0n, is oxygen js O n oxygen gas O2, or r b0th O2 |
| |
| 2008-06-18 |
| help: 14:11 |
| And im writin the phys p2 tomorrow and no way can i use hop, skip and jump. |
| help: 14:08 |
| Hey mr g. I would love and really appreciate it if you could guide me on how to solve stoichiometric calcs. I have no idea on how to solve with the cross multiplication, only hop, skip and jump |
| PUNKDangel: 08:57 |
| Nice name |
| PUNKDangel: 08:57 |
| ChemROX |
| |
| 2008-06-17 |
| V. Gokal: 17:44 |
| Hello ChemROX./silver nitrate / copper(I)oxide / ammonium sulphate / iron(III)oxide / iron(II)nitrate / lead(II)acetate |
| ChemROX: 10:43 |
| Plz help me out. I need the chemical names for the ffg: AgNO3, Cu2O, (NH4)SO4, Fe2O3, Fe(NO3)2, Pb(CH3COO)2 |
| |
| 2008-06-16 |
| WhizGal: 16:52 |
| Thank you Mr Gokal. |
| V. Gokal: 14:18 |
| Hello. Iron serves as a catalyst in the Haber Process. |
| WhizGal: 13:06 |
| Does anyone know what the purpose of iron in the Haber process is? |
| |
| 2008-06-14 |
| 50 cent: 22:40 |
| Hey mr g cud u plz quickly go thru hw 2 calc pH values n concentration. I know 2mrw u doing organics. Bt it wil b highly appreciate if u quickly go over those sections |
| 50 cent: 22:40 |
| Hey mr g cud u plz quickly go thru hw 2 calc pH values n concentration. I know 2mrw u doing organics. Bt it wil b highly appreciate if u quickly go over those sections |
| |
| 2008-06-05 |
| V. Gokal: 21:18 |
| Revision yes. |
| PUNKangel: 16:17 |
| Sir can u do sum revision on sunday 4 gr11's? Thanx |
| |
| 2008-06-04 |
| ree: 18:51 |
| Ooh... Sorry sami :-$ my mistake |
| V. Gokal: 18:39 |
| If you are in grade 10, solving calculations without mole concept will require you to use 2(56 + 16), but remember that this figure is the total mass, not molar mass. Percentage composition does NOT use the numbers in front. 2FeO will use 56 + 16. |
| V. Gokal: 18:37 |
| Hey people. eg FeO. Molar mass is strictly from periodic table. 56 + 16. Even if given 2FeO molar mass is still 56 + 16. This means mass for each mole. And irrespective of how many moles are around, molar mass refers only to ONE mole. |
| ree: 17:56 |
| Oh & hey sir, most of us r writing phys p1 next tues.wil u by any chance be doing any type of revision? |
| ree: 17:55 |
| Hey sami, the (2x56)+(2x16 is the correct one. Punkangel the exams r making my brain explde! :-) |
| PUNKangel: 16:10 |
| Hws exams guys? |
| sami: 14:04 |
| when u finding the molar mass of 2FeO to find percentage comp...do you say its (2x56)+(2x16) or 56 + 32 for the molar mass pls anyone help me asap |
| sami: 14:04 |
| hey mr g i know this is a silly question but im slightly confused... you know you said the big no in front of a compound is only used to hop skip and jump...like eg 2Fe + O2 -> 2FeO but wat about in percentage composition..when u finding the molar mass of |
| |
| 2008-05-25 |
| help: 17:39 |
| hey does anyone knw what an acid that can furnish 2 protons is called? |
| |
| 2008-05-24 |
| METALpunk: 09:29 |
| Hey people |
| |
| 2008-05-23 |
| kuvz: 23:10 |
| El sorry mesmerised.where you able to get your answer though? |
| |
| 2008-05-21 |
| V. Gokal: 15:39 |
| Answers? Ok. |
| |
| 2008-05-20 |
| Tersh: 20:37 |
| Hel0 mr gokal. Wuld lyk 2 knw whetha u wil b givin us model answerz 4 da assignments u give us in tution? |
| METALpunk: 16:04 |
| Hwsit |
| |
| 2008-05-15 |
| METALpunk: 06:46 |
| Helo helo helo |
| |
| 2008-05-14 |
| V. Gokal: 13:36 |
| Hello people |
| |
| 2008-05-12 |
| 50 cent: 17:43 |
| Hey mr g cud u plz bring notes acid n base. I dnt knw watz going on. Watz a triproton? |
| V. Gokal: 14:55 |
| Hey! Sorry Mesmerized... |
| Mesmerised: 06:39 |
| Gudmawning ppl... im rytn at 8.00am 2dy and n0b0dy answrd dat p.h quest 0f myn... sir dat iz vewi bad |
| |
| 2008-05-11 |
| Mesmerised: 20:44 |
| anybody...if u guys hava answer 4me,plz plz.. need 2knw if im 0n d ryt track ! answr my p.h questi0n |
| Mesmerised: 18:01 |
| yo mr g! hw u ? l0ng time.. uhm got a question 4u.. calc ph of 0,5 mol.dm3 lithium hydroxide. Thnx a (show me d steps plz) tnx. ! |
| |
| 2008-05-09 |
| V. Gokal: 21:40 |
| Hello! No need to stress. We have a plan. Secrets of Science. S.O.S. Chill!!! |
| |
| 2008-05-08 |
| A: 19:49 |
| Helo Mr. Gokal. Sorry to trouble you but im feeling the stress of matric june exams creeping up. We are nowhere near completing the secti0ns properly in school. Are you/can u by any chance hold extra lessons? We need your magic. It wil be greatly apprecia |
| |
| 2008-05-07 |
| V. Gokal: 21:26 |
| Hello. I will put this section on the notes. Call me in the meantime. |
| PERNELLE: 17:47 |
| HI MR G. CAN YOU PLEASE TELL ME HOW TO CALCULATE THE VOLUME OF HCL THAT IS PUT INTO AN HCL SOLUTION(HCL+WATER). THE VOLUME OF THE SOLUTION IS 1000CM^3 AND THE CONCERNTRATION OF THE HCL IS 0.1M. REALLY URGENT.PLEAS. THANK YOU |
| |
| 2008-05-05 |
| V. Gokal: 19:58 |
| Ignore the impure value. Calculate the correct value. Then divide these two and multiply by 100. |
| V. Gokal: 19:55 |
| Hello |
| Samishtha: 18:32 |
| Hi mr g0kal..i need sum help..hw d0 u calculate % purity? |
| |
| 2008-05-01 |
| METALpunk: 12:49 |
| U wore a lovely sari in da pic i saw in da paper :-% |
| |
| 2008-04-26 |
| T1metal710: 17:17 |
| Hw was da debs ball? Hope u had a gr8 tym :-] |
| |
| 2008-04-25 |
| ree: 15:51 |
| Yup :-) |
| |
| 2008-04-21 |
| T1metal710: 18:14 |
| Ree, u frm res hills? |
| Ree: 17:46 |
| Heya, does any1 knw what mass spectroscopy is? |
| |
| 2008-04-03 |
| T1METALHED: 23:31 |
| Yo yo |
| |
| 2008-04-02 |
| Peace78609: 01:12 |
| hy kuvz.mole is mas ova mola mas.molar mas found on d pediodc tabl. |
| |
| 2008-03-27 |
| T1ROCK$TAR: 18:00 |
| Hey kuvz! KT NAIDOO suposd 2 teach us all of dat lst yr but he didnt lyk all the other sections |
| |
| 2008-03-26 |
| kuvz: 18:02 |
| d0es ny1 knw d f0rmula ta calc the chemistry c0ncept of a m0le???? |
| |
| 2008-03-16 |
| T1ROCKSTAR: 16:08 |
| Hey Mr G! Is ther physics tution on sunday 4 gr11? |
| |
| 2008-03-15 |
| Acc: 16:41 |
| Hi sir! Can u tel me wich websyt has newtons experiments & investigations? |
| |
| 2008-03-13 |
| Mesmerised: 22:14 |
| oh thnx sir, i wonder, if my sch0ol iz gna hav it part of d paper.. |
| Gokal: 21:34 |
| Water of crystallization is easy. Some schools have grouped together to write a common exam. |
| Mesmerised: 21:24 |
| ok,nebody here knws if water crystalizatn gna gt testd? pls leme knw quik |
| Mesmerised: 20:42 |
| hey mr g, wntd 2 knw ds cz im rytn phys tmrw n i thnk im pretty readi ..d grd 11s r rytn a c0mm0n phys paper iznt? s0 iz water of crystalisati0n c0ming out? do i needa wori bowt ds secti0n? |
| |
| 2008-03-12 |
| Gokal: 20:50 |
| Hello Kids! Yes, we will do Rates and Equilibrium. Easy things. We have a coooool way of doing the calc. and LCP. Promise! |
| T1 YAMAHA: 08:46 |
| Hey Mr G! Can we do sum chemistry at tution 4 gr11? Thanx. |
| |
| 2008-03-11 |
| Tersh: 21:08 |
| Hel0 Mr Gokal. Is it possible if u can do some work on rate of reactions on sunday 4 gr12, as i am writin physical science nxt tuesday. Thanx u. |
| |
| 2008-03-07 |
| nivi: 19:12 |
| Hi Sir,I need help with this chemistry Q.Suggest a reason for the ffg observation:Some adhesives are sold in 2 tubes.The contents of the tubes have to be mixed before the glue sets in. |
| |
| 2008-03-06 |
| Peace78609: 20:16 |
| Thanx sir.let us knw wen we may strt dat section. |
| Gokal: 18:52 |
| Ok. Chemical Equilibrium is easy. |
| |
| 2008-03-05 |
| peace78609: 23:29 |
| peace.sir,at skwl we doin eqilibrium.n nw we need help!plz...we ryt soon.thanx |
| |
| 2008-03-02 |
| Kash: 19:56 |
| Cud u plz mention sum websites that have simple pracs 2 find gravitational acceleration |
| |
| 2008-02-26 |
| Angelina: 19:37 |
| calc - the work done by the box against air fricton |
| Angelina: 19:37 |
| calc - the work done by the box against air frictn |
| Angelina: 19:36 |
| calc- the work done by the box against air frictn |
| Angelina: 19:36 |
| Pls hlp-empty woodn box, 5kg, pushd ova d side of a hi clif. asume dat d box acc. unifrmly n dat it reaches a spd of 20ms-1 afta it fals 100m. |
| |
| 2008-02-12 |
| Freefall: 15:42 |
| Thanx sir :) figured it out |
| |
| 2008-02-11 |
| Gokal: 22:51 |
| g is considered 10 only near Earth's surface. Elsewhere it can be different. |
| Gokal: 22:50 |
| u=0 s=80 v=40
Then v(sq) = u(sq) + 2gs
Solve for g |
| Gokal: 22:46 |
| Not h for your quest. t = 4 |
| Gokal: 22:45 |
| Dropped u = 0 g = 10 and h = 80 |
| freefall: 18:19 |
| Calculate the acceleration of gravity at this point on the earths surface. |
| freefall: 18:18 |
| Ok mr gokal or whoever is answering this i promise this is my last question for today. An object falls from an initial velocity of zero meters per sec and falls 80m before hitting the ground at a velocity of 40m per sec. |
| freefall: 18:09 |
| Oh and if the same ball was thrown with an initial velocity of 0 m per sec, hw long will it take to reach the water? Would it just still be 4 or is the fact that its thrown change it? |
| freefall: 18:08 |
| Oh and if the same ball was thrown with an initial velocity of 0 m per sec, hw long will it take to reach the water? Would it just still be 4 or is the fact that its thrown change it? |
| freefall: 17:57 |
| ok wait, is the answer 80? |
| freefall: 17:52 |
| Wish i could help ?Ally bt no idea. mr gokal, any1 plz help. a ball is dropped frm a high bridge and reaches the water below 4s later. hw high is the bridge? is it me or is like one more figure or num missing? coz im confused |
| |
| 2008-02-10 |
| Ally: 22:08 |
| i need help plz.rytn test 2mor0.. a bl0ck 0f mass is 10kg rests on a rough horizontal surface.a force f acts on the body at an angle of 30degrees to the horizontal.calc force f required 2 accelerate the block at 5 metres per sec squared,if d force of fric |
| |
| 2008-02-09 |
| Gokal: 22:17 |
| Calc. t for rise. For the fall : u = 0 g = 10 and s = (total h) which you calculated before. |
| Gokal: 22:16 |
| You shoould calc. height above building first. u = 8 g = -10 and v = 0. Calc s. For total height add the 12m. |
| Gokal: 22:15 |
| Check notes on falling bodies in mlearner science. |
| E=Mc2: 09:06 |
| Ugh, Always cuttin d peeps off cont... .(b) find the total time that the ball is in the air.(c) find the maximum height reached by the ball above the ground. |
| E=Mc2: 09:03 |
| Yo mr. G! I need a bit of help ere
: A ball is thrown straight upward with an initial speed of 8m/s from the roof of a building 12m above the ground.(a)Calculate the final velocity of the ball as it hits the ground. (b)Find the total tim that the ball i |
| E=Mc2: 09:03 |
| Yo mr. G! I need a bit of help ere
: A ball is thrown straight upward with an initial speed of 8m/s from the roof of a building 12m above the ground.(a)Calculate the final velocity of the ball as it hits the ground. (b)Find the total tim that the ball i |
| E=Mc2: 09:01 |
| Yo mr. G! I need a bit of help ere
: A ball is thrown straight upward with an initial speed of 8m/s from the roof of a building 12m above the ground.(a)Calculate the final velocity of the ball as it hits the ground. (b)Find the total tim that the ball i |
| E=Mc2: 09:01 |
| Yo mr. G! I need a bit of help ere
: A ball is thrown straight upward with an initial speed of 8m/s from the roof of a building 12m above the ground.(a)Calculate the final velocity of the ball as it hits the ground. (b)Find the total tim that the ball i |
| |
| 2008-01-31 |
| Gokal: 21:48 |
| constant resultant force = constant acc. |
| Gokal: 21:46 |
| Constant positive acceleration. The acceleration itself can be calculated by first calc. the horizontal component of force. |
| Samishtha: 20:03 |
| acc...i c da right angled triangle an i usd trig 2 work owt wat Fx is bt i dnt undastand wat motion da object is unda going.. |
| Samishtha: 20:00 |
| Sir, if an object dat has a mass of 2kgz and has a diagonal force of 12N puln it at an angle of 60 degreez on a frictionaless surface,with an initial velocity of 0 m.s-1...is da object undergoing constant velocity, constant positive acc, constant negative |
| |
| 2008-01-30 |
| Gokal: 20:48 |
| Newton 1, Newton 2, Newton 3, Gravitational Law |
| T1 YAMAHA: 20:37 |
| Hey! Wat tym is gr11 physics tuition? |
| Mobius.: 17:06 |
| Hey sir pleas can u tel me how many newtons laws are there. I think it is 5 |
| |
| 2008-01-24 |
| E=mc^2: 22:41 |
| ThanX Mr Gokal it really helped me and i'll wait for the other notes |
| Gokal: 20:27 |
| Newton 2 is a vast section. We will put up the notes this weekend. Sorry! Newton 3 as well. |
| Gokal: 20:26 |
| A resting object stays at rest because of its inertia. Inertia can also keep a moving body moving at a constant velocity. So when a resultant force acts, it overcomes the inertia - it overcomes the "rest" or "constant velocity". The object then accelerate |
| Gokal: 20:24 |
| ChemChick. The property of matter is inertia. |
| E=mc^2: 17:24 |
| Please could anyone explain Newton2 and Newton3 ? |
| |
| 2008-01-22 |
| ChemChick: 16:52 |
| Which property of matter makes it necessary for a force to be applied to a body in order to accelerate it? mass or weight |
| |
| 2008-01-19 |
| Me: 13:37 |
| Hey sir. . Must we also be present for the parents meeting . Mines are in jhb atm. So just wanting to know. |