Chemistry:
What is the substance used to confirm the test of alkanols?
Physics:
when a positively charged body is brought near a neutral gold leaf electroscope,what happens to the leaf?
Biology:
what is the name of the false germ cell in hydra?
Maths:
find the inverse of y=(3x + 4)

joseboy199:
Continuation..
250N is aw Fc..therefore coef=F/R,,,whr f is 250N,and r is 100*10=1000N,
coef=250N/1000N
Ans=0.25

Very much correct.

larri:
8N-6N=2N
mass=4KG
F=MA
A=F/M
A=2/4
A=0.5m/s-2

Wrong! U seemed to forget that the two forces acting on the body are perpendicular.

t.boy007:

Physics:
when a positively charged body is brought near a neutral gold leaf electroscope,what happens to the leaf?

The goldleaf will diverge

buzyguy: Grt pharmcst nd medics in da aoz signify by quoting 'great'

great

Becalina: The maximum speed of electrons emitted from a given metal surace when illuminated by suitable radiation depends on what?

frequency gbam.

ANDREW2EIC: Attempt this:

What are the dimensions of electromotive force?

ML²T³I^-1

ANDREW2EIC:

Wrong! U seemed to forget that the two forces acting on the body are perpendicular.

F=MA F=8+6=14 =14=4*A
A=14/4
A=3.5m/s-2

ANDREW2EIC:

The goldleaf will diverge

you're on the way,but you did not mention the degree of its divergence.......may be divergence increase,reduce or comes to state of rest..

For biology and more chemistry tutoria, click on the link below
www.nairaland.com/1210309/jamb-2013-thread-biology-chemistry

Tizzie: F=MA F=8+6=14 =14=4*A
A=14/4
A=3.5m/s-2

Wrong. The two forces are perpendicular. Think deep, u can do better.

Atesunate15:
ML²T³I^-1

Correct, though i expected to see how u got it.

Attempt this:

A boy drags a bag of rice along a smooth horizontal floor with a force of 2N applied at an angle of 60 degree to the floor. The work done after a distance of 3m is....

ANDREW2EIC: Attempt this:

A boy drags a bag of rice along a smooth horizontal floor with a force of 2N applied at an angle of 60 degree to the floor. The work done after a distance of 3m is....

fscos¤2*3*cos60(0.5)=3joules.

ANDREW2EIC: Attempt this:

A body of mass 4kg resting on a smooth horizontal plane is simultaneously acted upon by two perpendicular forces 6N and 8N. Calculate the acceleration of the motion

F=MA and F=8 - 6 =2, 2 = 4 * a, a=0.5

ANDREW2EIC: Attempt this:

A motorcycle of mass 100kg moves round in a circle of radius 10m with a velocity of 5m/s. Find the coefficient of friction between the road and the tyres.

N.B: show full working in all the questions.

f=uR, u= co eficient of friction, R=normal reaction i.e the weight. Our u=5 v= 0,s=10 so u^2=v^2+2as givs ,25=0+2*a*10 a=0.8ms recall F=uR f=100*0.8=80. 80=u*1000 u=0.08

Tizzie: F=MA F=8+6=14 =14=4*A
A=14/4
A=3.5m/s-2

since d force is perpendicular d force will b 10N according 2 vector diagram of d side of triangle using pytagorus thorem.. F=MA
10=4A
A=10/4
A=2.5m/s-2

larri: since d force is perpendicular d force will b 10N according 2 vector diagram of d side of triangle using pytagorus thorem.. F=MA
10=4A
A=10/4
A=2.5m/s-2

Now u are there. Thumb up!

Jasboi: f=uR, u= co eficient of friction, R=normal reaction i.e the weight. Our u=5 v= 0,s=10 so u^2=v^2+2as givs ,25=0+2*a*10 a=0.8ms recall F=uR f=100*0.8=80. 80=u*1000 u=0.08

U are wrong my guy. Check the previous pages cos someone has got it right.

ikeola6: fscos¤2*3*cos60(0.5)=3joules.

U are right, but u would do a lot of people favour if u xplain why u opted for Fcos60.

larri: since d force is perpendicular d force will b 10N according 2 vector diagram of d side of triangle using pytagorus thorem.. F=MA
10=4A
A=10/4
A=2.5m/s-2

yea u re ryt we just add usin pytagoras.... Omo i dan tey for house....choi

joseboy199: the substance often use for vulcanization of rubber is....a)chlorine b)hydrogen peroxide c)sulphur d)tetraoxosulphate(vi)acid

the correat answer is c)sulphur

What is d presence of sand inside d flask when calcium carbide is reacted wt water in d preaparation of ethyne?

So dat da reactn flask wil nt break or crack

bleznolap: What is d presence of sand inside d flask when calcium carbide is reacted wt water in d preaparation of ethyne?

Which of the following can be adopted to prevent rustinga)eletrolytic,cathodic protectn by making zinc the cathode and iron the anode (b)electrolytic cathodic protection with the anode zinc and cathode iron (c)electrochemical,with the anode iron and cathode zinc (d)electrochemical,with the anode iron and cathode tin?

2mirrors r inclined at an angle of 45 to each oda,a ray is incident at an angle of 20 at da 1st plane.what angle does the reflectd ray mak wit da normal at the second mirror?

Hw many atoms are present in 1mole of hydrogen moleculez?

When a purple shirt z viewed throu a blue glaz, nd again viewd tru a red transparent paper.wot colour doez da observa see?

Which atom likely possez da following:n=4,l=0,m=0 nd s=+1/2 nd -1/2.

buzyguy: Which atom likely possez da following:n=4,l=0,m=0 nd s=+1/2 nd -1/2.

berylium since
l=0 s orbital(group 1 and 2)
l=1 p orbital(group3-0)
l=2 d orbital(transition element)
l=3 f orbital(lanthanide n actinide)
l=4 g orbital