Emmyeuler1's Posts
Nairaland Forum › Emmyeuler1's Profile › Emmyeuler1's Posts
1 2 3 4 5 6 7 8 ... 20 21 22 23 24 25 (of 25 pages)
WHAT IS ANOTHER NAME FOR A CUMMUTATOR AND WHAT IS IT USED FOR? |
buzyguy: I mean Wit appriciable interna resistnceE-V=v....where v=ir=lost voltage,V=terminal p.d and E=emf....if follows dat E-V=Ir....HENCE,V=-Ir-E THEN Ir=-V-E....DIVIDING BOTH SIDES BY r gives I =V/r-E/r... COMPARING WITH EQUATION OF A STRAIGHT LINE Y=MX+C....Y=I,X=V,M=-1/r and C=-E/r....it going to be a graph with negative slope with intercept on both axis...ANS(B) |
buzyguy: The compound formd when da two end alkyl groupz of propyl ethanoate are interchangd z,a.methyl propanoate b.ethyl propanoate c.methyl butanoat d.ethyl butanoteANS C |
buzyguy: Ok,chemstry:the product of reactn btwn excez ethanol nd conc.H2SO4 at 145degcelsiuz is,a.ethene b.ethanoic acid c. diethysulphate d.ethoxyethaneANS IS C |
buzyguy: Ok lemi ask ds:wotz da nature of the graph relatnshp btwn current nd voltage at verticl nd horizontal axiz respectvly?a.positive slope wit zero origin b.negativ slope wit intercptz on both axes c.positiv slope wit negativ nd positve intercepts on verticl nd horizntal axiz respectvly d.positv slope wit negtive nd positve intercptz on horizontl nd verticl axiz respctvly.IT DEPENDS.... IF IT WERE OHMS LAW ,THE ANS IS A.... SINCE V=IR....BUT 4 A CELL THE ANSWER IS B |
buzyguy: Itz true bt nt applicable,unda mechinez mechanical advantage z blievd to be independent of load,nd we all knw dat they r linked by direct proportn.also elasticity,youngz modulus z believd to be independent on any of itz parameterz bt yet it increases as the stress.datz y physcz z sumhw intricateI HATE PHYSICS.AS A RESULT, I DONT KNOW THE SUBJECT.... |
buzyguy: Hmm,u tried 4dat...it depndz only on da electrod materialbut emf=Ir+V....which shows direct proportion between emf and internal resistance |
buzyguy: Da emf of a cell depends on da follownI DONT KNOW IT...BUT THE ANS IS B |
buzyguy: Ah,if u wld b good at physcz nko?u wil nw bcom a physcz wizard.u missd out da number of particlez(N),den itz done.wizard 2be!u r 2gud.K.....SINCE THERE ARE 2 PARTICLES INVOLVED N=2....R.M.S VELOCITY=SQRT[3PV/NM]=SQRT((3*30*10)/2*2)=15m/s |
buzyguy: Two particlez each of mass 2kg collide with 10N/m^2 occupiez a volume of 30m^3.calculate the rms value of their velocitiez in m/s.broda please help me because i am not good in physics............ Root mean squared velocity=sqrt(3pv/m)=sqrt[(3*30*10)/2]=21.13m/s |
Mbahchiboy: Perpendicular forces=6+8=14 f=ma;a=f/m;14/4=3.5MBACHIBOY PLEASE CAN I HAVE UR NUMBER LET US RELATE?....MINE IS 08037841556...GIVE UR PHONE NUMBER PLEASE? |
ALL MY FRIENDS IN THE U.I DE ROOM....HOPE U GUYZ ARE PREPARING STRONGLY 4 U.I. THE FIRST AND THE BEST.......TO WHOM SHOULD WE ADDRESS OUR TRANSCRIPT TO?...ADMISSION OFFICER OR REGISTRAR? |
Doctor20002: GOODNEWS! GOODNEWS!! GOODNEWS!!!PLEASE STOP DECEIVING PEOPLE.....! |
buzyguy: A force of 100N is used to push a body up a plane inclined at an angle 15deg. To the horizontal.if one-half of da work done by the force is used to overcom frictn,the weight of the body in newtonz is,a.50/sin15deg. B.50sin15deg. C.100/sin15deg. D.100sin15deg.....the answer is (A)....50/SIN15 |
buzyguy: Anoda:a student measurez the internal nd external diameter of a cylindrical vessel as 100(+-1)mm nd 104(+-1)mm respectivly.the possible error in the determinatn of the thicknez of the vessel is,a.+-2mm b.+-1mm c.+-0.5mm d.0 +- means pluz or minuz.....+-2mm(ans A) |
joseboy199: U tried...v/f=landa,20/10=2cmHALIDAY AND RESNICK,NELKON AND PARKER,UNIVERSITY PHYSICS,ANYAKOHA |
buzyguy: Ok,i tot u wld finish it up.30000*20 * 100/75=8.0 *10^5jMr buzy what u did wasnt correct...check page 192,example 7.9 in m.w anyakoha for more clarification |
joseboy199: The wavelength of a stationary wave z 36.0cm.what z d distance btw a node n d nxt anti-node joseboy199: The wavelength of a stationary wave z 36.0cm.what z d distance btw a node n d nxt anti-node joseboy199: The wavelength of a stationary wave z 36.0cm.what z d distance btw a node n d nxt anti-node |
buzyguy: Anoda1:an object slidez down an inclined plane from an initial height of 30m.itz velocity at the foot of the plane z 20m/s.the percentage of itz initial potential energy wich z dissipated as heat z,a.33.3% b.50% c.60% d.none% OF original potential energy lost as heat=(100m/300m)*100=33.3%....ans(A) |
buzyguy: U tried,25% meanz workdone against frictn then the efficiency wld be 100%-25%=75%,frm dat nw we cn workout da work done by the effort to giv awa desired ansa.THEN TELL ME THE CORRECT ANSWER SINCE I AM WRONG...! |
buzyguy: U tried,25% meanz workdone against frictn then the efficiency wld be 100%-25%=75%,frm dat nw we cn workout da work done by the effort to giv awa desired ansa. |
buzyguy: anoda:a vibrating string of length 5ocm producez a note of frequency 250Hz.in order to produce a note wich z an octave higher,the length of the string required z,a.25cm b.25[squar.root 2]cm c.50[squar.root 2]cm d.100cm am sori 4da inaccuracy of mathematical signzF=1/2L(ROOT(T/M))....F=K/L...250=k/50....k=12500....to produce an octave frequency....500=12500/L...L=12500/500...L=25CM....ANS(A) |
buzyguy: Anoda attempt:a lift of weight 30kN movez upwardz through height of 20m.if 25% of the workdone on the lift z used in overcoming friction,the work done is a.4.5 *10^5j b.6.0 *10^5j c.7.5 *10^5j d.8.0 *10^5jTHE ANS IS (C).....600000+[25/100(600000)]=7.5X10^5 |
joseboy199: wrong,,,Try again....PLEASE HELP ME BECAUSE I'M NOT GOOD IN PHYSICS....Phase difference=[(2)(pie)(x)/lamda]=2(pie)(20)/50=4/5 pie....but pie=180....therefore,((4/5)X180)=144 DEG |
joseboy199: wrong,,,Try again...Broda pls help me out because i am not good in physics....phase difference =[2(pie)(x)/lamda] =(2XpieX20)/50=4/5PIE |
Adex097: may your score explode positively IJN......TNX MY GUY....I WISH U SAME |
shakur07: ds nigga is going to be either ma senior or ma course mateDID U CHOOSE PHARMACY IN U.I.?....WHAT'S UR PHONE NUMBER LET US RELATE?...MINE IS 08037841556 |
Adex097: when you say EXPLOSIVE, you need to be specific o......HEY DUDE,WHAT I MEAN HERE IS A POSITIVE EXPLOSION..... |
@ QUALCOM....I HOPE U'VE NOT 4GOTTEN THE FACT THAT I WENT TO U.I'S ACADEMIC OFFICE TO CONFIRM.....THEN WHY THE SPEEDY MOCKERY.....! |
shakur07: wat r d courses u put in for bothI PUT IN 4 PHARMACY IN BOTH UTME AND DIRECT ENTRY....BOTH OF WHICH I CHOSE U.I FIRST AND SECOND CHOICE.... |
shakur07: i thought u are for direct entry nih..abi ma eyes are playing pranks on meI PUT IN 4 BOTH JAMB AND DIRECT ENTRY BRO..... |
O LORD HELP ME TO GET AN EXPLOSIVE SCORE IN THIS YEAR'S UTME...! |
i)chargez (ii)electrodz (iii) internal resistnce (iv)concentratn of electrolyt. A ii iii & iv b. iii c.ii d.all