₦airaland Forum

Another attempt,The coefficient of linear expansn of aluminum z 23 * 10^-6/k.if the volum of a pot made wif aluminum at temperature To is Vo,what will be the change in temperature resultn in a decrease of 0.20% in volum of the pot?a.-87 b.+87 c.+29 d.-29 all in degreez centigrad

Simplefemo: v=3u
1/3u+ 1/u=1/15
1+3/3u=1/15
60=3u
u=20cm
object distance, u= 20cm

oh! U made a mistak there,da object z upright or erect that mean virtual.so da image distnc shld b -3u

Wow miss alot,ao readn life? Hope sweet!

Hmm,u r vry rite.no wahala jamb z already in wahala ijn.we r all gonna mak it big!

ANDREW2EIC: Bravo for ur good reasoning. You know, after solving the question the first time, i just told myself "wow! Jamb could be so tricky sometimes".

I think why some students fail exams thesedays is dawn to lack of composure in exam hall, rather than ignorance.
I keep asking God for this wonderful virtue called composure together with serenity. With them, i know i will keep blasting exams after exams.

Mag.=v/u,v z sam with u in distance from da mirror.so 10cm/10cm=1 no unit.i lyk dat level don chang we r nw on level ten over ten.lolz!

ANDREW2EIC: Attempt this:

The magnification of an object tall when placed 10cm in front of plane mirror is

Do u bliev seriez sumtymz mak mistakez?dou am nt critisizing anywy!

Simplefemo: sure, check 1995 ume, question 50 (Biology)
positive criticism can not be ruled out.

Yeah,u av 4gottn.lolz

Bond008: oops.. thanks

Simplefemo: 1. A (a cross between tall plant [TT] and dwarf plant [tt] will produce Tt, Tt, Tt, Tt in the 1st filial generation, if F1 is advanced to F2, Tt and Tt will result in plants with the following gene composition: TT,Tt, Tt, tt in the 2nd filial generation. 1 is dwarf out of 4, hence 30 will be dwarf in 120F2 generation.
2. B -oviparity- ovoviparity- viviparity (as in bird to guppy (a fish) to mammal).

hmm,i thnk ovoviviparity z found amng reptilez

Lng tym evrybdy,my phne wz faulty bt rectified nw.ao readn stuff?

Bond008: 1/f=1/u+1/1/u
1/f=1/4+1/25
1/f=25+4/100 =29/100
f=100/29
f=3.44cm (a)

put -25 cuz itz virtual enlargd image,anza z B

Itz B,x^hy z suffer male while x^hx^h z female sufferer.x^hx z female carrier.so nw croz breed x^hx^h with x^hy to get da desired ratio.thks u tried

larri: Answer is (c)1/2 and 1/2

Itz A

larri: Answer is d

1-A,2-D

Simplefemo: The F1 of a cross a tall and a dwarf plan was tall. The F1 was advanced to F2.
How many of 120F2 plant will be dwarf?
A. 30 B. 60 C. 90 D. 120

2. From which group of animals are mammals generally believed to have most recently evolved?
A. Reptile b. fishes c. amphibians d. birds

1-A,2-d i tnk

larri: 1.b 2.b

I grt evrybdy,apy day!

A man suffering frm haemophillia marries a woman sufferer.what z the chance of having a sufferer daugher and carrier daugher respectively?(a)1/2 and 1 (b)1/2 and zero (c)1/2 and 1/2 (d)1 and zero

As the electronegativity différnc btwn two atoms bcomez smaller,the bond type btwn them tendz to,a.becom less polar b.become more polar c.maintain the sam level of polarity d.maintain d sam level of non-polarity

Ca3(PO4)2 is sparingly soluble salt in water.The molar solubility of da salt in terms of itz solubility product,Ksp,is given by: a.[Ksp/108]^1/3 b.[Ksp/108]^1/5 c.[Ksp/36]^1/3 d.[Ksp/36]^1/5

50cm3 of 0.10 mol/dm3 Hcl solution z mixed with 50cm3 of 0.15mol/dm3 NaoH solution.what z the pH of the resulting solution?a.2.5*10^-2 b.0.0125 c.12.4 d.25.4

The image formed by the objectiv lens in a compound microscope is positioned 4cm from the eye-piece.if the final image z at 25cm from the eye-piece,the focal lenght of the eyepiece is,(a)3.4 b.4.8 c.21 d.29 all in cm

Miz alot Lngtym,sum1 try ds.TWO rayz of light wich are equally inclined to the vertical emanate from a point below the surface of a pool of water refractve index of 1.333.if the two rays are inclined to each other at an angle of 80deg. In the water,the angle between the rays when they emerge into air is, (a)59 b.105 c.118 d.160 all in degreez

Apy readn 2 all

It cn nt be D cuz hormonal response z slow rather than quick.

Simplefemo: 2. why a, why not d
3. Work it for the benefit of others

Ok

t.boy007:
yes you're wright,that was an error....duralunium=cu,mg,mn,al

1-D,2-A,3-C,4-C

Simplefemo: Exponential increase in the population of an organism is a characteristic feature of
a. binary fission
b. sexual reproduction
c. budding
d. vegetative propagation

2. A fundamental similarity between nervous and hormonal system is that both
a. involve chemical transmission
b.have widespread effects
c.shed chemicals intothe blood stream
d.evoke rapid responses.

3. 5g of oven dried soil was heated in a furnace for 24 hours. After cooling, it weighed 4.8g. What is the amount of humus in the soil
a. 40.0g per 100g dry soil
b. 4.4g per 100g dry soil
c. 4.0g per 100g dry soil
d. 0.4g per 100g dry soil.

4. During cell division, the two strands of chromosomes are joined at a point called
a. Spindle
b. Chromatid
c. Centromere
d. Aster

Dat optn b z incorrct cuz i thnk copper z used instead of iron

Simplefemo: 1.B
2.B

Rite

t.boy007:
a N2 requires +3 which is the highest in the above list to obtain a stable octet configuration

Chck my former amendmnt

t.boy007:
the value of L can't be 0 since n=3,so L must be definately =2

The likely dude,who needs a thorough nd effective psychiatric attention among our posterz here is ,a.mayorall b.buzyguy c.tboy d.donsnazzy.

Which molecule hz da least chemical reactivity?a.N b.Cl c.O d.iodine

Wot type of hybridizatn does graphite conform?a.sp b.sp2 c.sp3 d.sp3d