₦airaland Forum

Yes,it hz 1nc bn solvd here b4

joseboy199: a man stands one-third of d way btw two walls and clap his hands.he hears two distinct echoes 1s apart.if d speed of sound is 330m/s,d distance btw d walls is...JAMB 1980 QUE 45

Distnce frm da hunter to wall wen he firez z 330m,d=vt,330 * 1.den x=412.5-330 wich z 82.5m

joseboy199: a hunter 412.5m away from a clif,moves a distance x 2wrds d clif n fires a gun.he hears d echo 4rm d clif afta 2secs.calc d value of x(speed of sound in air=330m/s)

Vry correct!

emmyeuler1: F=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)

Ok,i tot u wld finish it up.30000*20 * 100/75=8.0 *10^5j

emmyeuler1: THEN TELL ME THE CORRECT ANSWER SINCE I AM WRONG...!

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

Nt b

joseboy199: B,

U tried,bt nt da ansa.

joseboy199: ans z A

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.

emmyeuler1: THE ANS IS (C).....600000+[25/100(600000)]=7.5X10^5

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 mathematicl signz

Anoda:a pipe organ X produces a note whose pitch z twice that of the note produced by a secnd pipe organ Y.if the speed of the wave in X z v,then the speed of the wave in Y z,a.v b.2v c.v/2 d.4v

Anoda:a boy standn between two cliffs which are 850m apart clapz his hands and receivez the echo from the nearer cliff after 2s.if the speed of sound in air z 348ms^-1,he will receive the echo from the second cliff after,a.1.5s b.2.5s c.2.8s d.3.0s

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 *10^5j

U r rite,bt 4gottn dat it encounterz frictnal force.ansa z nt c

snave007: F=ma so option C

Hmm,absolutely correct!lng tym,apy to see u back

larri: The Answer is A.320
calc d time 4 d stone 2 splash into d well
v2-u2=2as
a=10, s=80
v2=u2 + 2as
v2=0 + 2*10*80
v2=1600
v=40
v=u +at
40=0 + 10t
40=10t
t=4sec
it takes 4 seconds 4 d stone 2 splash into d well, therefore, it takes 0.25 sec for d sound 2 travel back through d 80m distance
v=s/t
v=80/0.25
v=320m/s.

Haloo to evry1 undahere shey mak i brng my questns?apy readn to u all!

Grtnz to evry gr8t jambite here nd wishn all of u,gr8t nd outstndn sekses in da coming xam.

Hi to evrybdy here,hop u r jackn wella mak God help us all with our preparatnz ijn

Hallooo,una all wldne eeeee.otojo meji..hop u neva stop readn shaa,abeg na stil dae read oo.try to reduce volatility to absolute zero.we r gonna mak it gargantum ijn.

Gr8t ife,lng tym hop una all dae read wella..neva 4get oau requirez excellent jamb performanc.we r gonna mak it big ijn,apy readn!

Wich of da follwn z employd in making match head?a.Pb02 b.kclo3 c.kno3 d.silicone

Anoda attempt:a studnt attemptz to estimat the speed of sound in air by dropping a stone into an 80m deep well.he heard the sound of the stone'z splast in water 4.25s after its release.if g=10ms^-2,the estimatd speed of sound in air in ms^-1 is,a.320 b.330 c.335 d.340

Yeah,u r vry rite.i tot da 50cm z equivalnt distance for landa.jst realiz itz landa gangan,gud lov dat.

emmyeuler1: ...Broda pls help me out because i am not good in physics....phase difference =[2(pie)(x)/lamda] =(2XpieX20)/50=4/5PIE

Sum1 try ds:a crate which z pulld up a smooth inclined plane with a force F moves up the plane with an acceleratn of a.if F z doubld,the acceleratn,a.is quadrupld b.more than doubld c.doubld d.lez dan doubld

I only rushd in nd out da other tym,i grt evrybdy here brngn ds thread alive...una all weldne oo.success z ourz ijn

Ah,notn again oo

joseboy199: wrong,,,Try again

20/50=2/5landa

joseboy199: a progressive wave has a wavelength of 50cm.calculate d phase difference btw two points at a distance of 20cm apart..

Wu dae here eeeee?otojo meji i grt evrywan,jst flyn by like a witch.hop we r all on awa trackz!neva recez,read more....dan b4 to avoid volatility.

Gr8t ife! Hw hz bn ur readn?Abeg jack wella o cuz oau na war field o,as dem dae waste 300 abov na so dem dae apr8t som 300s.So we av got to hit a very high jamb score,so as to boost awa aggrgate.gr8t ife..We rule!

U r frm elds(educationally lez developd state),so u av a greater chanc of being admittd than catchmnt aspirntz cuz their cutoff points r alwayz lower.Dou dependn on no of pass,u jst need to blast jamb most pjamb.Apy readn!

Fred120: Law aspirants we gat to relate,hope no tribalism cus am 4rm delta

1-vestibule,6-white mater,u really tried bro.Keep it up nd more!

oyestephen: 1. Not sure but I think cochlea
2. I think spindle D
3. Interphase c
4. Effectors A
5. Peristalsis B
6. None c
7. Extracellular D

Hiìì to all.Miz evrbdy,my phne had go a permanent prblem...Datz y av nt bn here.Hope readn z interest!We wil all mak it ijn.See yer later!

4any applicnt,oau akseptz 2sittns for all coursez,evn includn itz medical skl.if u av neva had any result at all u cn stil regster 4 private waec gce nd neco gce,u cn stil mak it with da result.datz 1 of da advantagez ova oda uniz!jxt prepare hard 4jamb nd putme then rest z simple..apy readn!