₦airaland Forum

I need help on this The first stable product formed during photosynthesis is_____(a)starch (b)lipids(c)glucose(d)oxgyen

Dat 20& is 20%.
The answer z 69dm^3 i dnt knw hw to get it

Eben331:
2.76dm^3 or 2760cm^3. Is it correct?

Gracy3535:
Calculate the volume of air required to produce 35g of phosphorus (v) oxide during the combustion of an excess of phosphorus.[O=16,P=31.All gas volumes measured at the same temperature & pressure.Air is about 20& oxygen by volume]

check it nw

Eben331:
A

Y did you minus 4 the. p.e=k.e learning tho

Dellybanky:
1.A lead bullet of mass 0.05kg is fired with a velocity of 200m8’1 into a lead block of mass 0.95kg.Given that the lead block can move freely, the final kinetic after impart is


A machine gun with a mass of 5kg fires a 50g bullet at a speed of 100ms*1: The recoil speed of the machine gun is (a) 0.5m/s (b) 3.5m/s (c) | m/s .(d) 2mls (e) 4 m/s


The length of a displaced pendulum bob which passes lowest point twice every second, assuming g is 10m/s is

buzy nw ll try later
but our bosses might help sha

SaintAY:
pls does ui post utme reqiure current affairs

capital NO only ur jamb combo

Dellybanky:
answers needed please

we cant continue solvin without knwin whether we are correct or wrong. The two answers up there which z correct so we also can learn 4rm mistakes

Calculate the volume of air required to produce 35g of phosphorus (v) oxide during the combustion of n excess of phosphorus.[O=16,P=31.All gas volumes measured at the same temperature & pressure.Air is about 20% oxygen by volume]

esivue007:
d composition of egg will change nah.

abi o just want to be sure. Tanx

Dellybanky:
A body rolls down a slope from a height of 100m. It's velocity at the loot of the slope is 20m/^| what is the percentage of its potential energy when converted into kinetic energy?

p.e=k.e
mgh=1/2mv^2
mass cancelled out
10*100=1/2*20^2
1000=200
%=200/1000*100
%=0.2*100
=20%

Sofia01:
chemical change

pls y z it a chemical change need info on that

Hmmmm. Boiling of egg is it a physical change or chemical change

Eben331:
Thanks bro...it has been solved already.

post d wrking here plssss

Eben331:
A rope 5m long is fastened to two hooks 4m apart on a horizontal ceiling. To the rope is attached a 10kg mass so that the segments of the rope are 3m and 2m. Compute the tension in each segment. PLS SHOW YOUR WORKINGS! CC: Teflon Blixx, DrBESTJC, hardebayor, Gracy3535, Damayogenius18 and others.

is the answer 10N or 400N

DrBESTJC:
No be small confusion be this.....where are the grammarians here ?.....Abeg explain your answer ooo...

ENGLISH

After two years of courtship,Jide is finally .......... Ngozi next week.
A) being married to
B) marrying
C) married to
D) being married by

am going 4 B

samuelizz:
Vy = final velocity of the vertical component of the velocity.
Uy = initial velocity of the vertical component
Ux = initial velocity of the horizontal component
Vx = final velocity of the horizontal component
when the body was thrown vertically downwards
(Vy)² = (Uy)² + 2gh.
30² = 10² + 2(10)h
20h = 800
h = 40m ( the height of the building )
Now, when the ball was thrown horizontally..
(Vy)² = (Uy)² + 2gh.
but Uy = 0 , since the ball was thrown horizontally.
(Vy)² = 2(10)(40)
(Vy)² = 800
Vy = √(800)ms-¹ (that is the final vertical component of the velocity )
But Ux = Vx (horizontal component is not affected by g)
The velocity it hits the ground V = √[(Vy)² + (Vx)²]
V = √[(√800)² + (10)²]
V = √(800 + 100)
V = √(900)
V = 30ms-¹

dis is d method i use Uv=Vv Uh=Vh 10=30 10=Vh Vh=30*10/10 Vh=30m/s dats d ansa cc eben331

BiafranDel:
A turning fork of frequency 600Hz
is sounded over a closed
resonance tube. If the first and
second resonant positions are
0.140m and 0.413m respectively,
calculate the speed of sound in air A. 508.4ms B. 480.0ms C. 339.6ms D. 169.8ms cc indomixx eben331

i got 327.6ms-1
v=2f(l2-l1)
v=2*600(0.413-0.140)
v=2*600*0.273
v=327.6ms-1

Eben331:
1 circle = 2pie = teta...where teta=angular displacement. >>> 1/4 of circle = 1/4*2pie = pie/2 >>> therefore teta = pie/2 >>> angular displacement = pie/2...distance s = teta*radius >>> distance s = pie/2*r = pie*r/2.

correct

A body moves over one fourth of a circular arc in a circle of radius r. The magnitude of distance travelled and displacement will be ?

Eben331:
You can dm me for my facebook ID. I just want to remain secretive.

ok add up ve post mine

BiafranDel:
text me yours. lemme add you up. I can't access my mails.

Grace Adeniyi
am puttin on red headgear & yellow top (facebook)

BiafranDel:
babe holla me. I just feel like to subscribe for you.

lol wats ur ID na

DrBESTJC:
Yesooooo.......na here e dey happen. Everybody should come to nairaland abeg.

Facebook I know, Nairaland I know,..........Who be Whatsapp

even me its nt everytime i ve mb to access whatsapp..
U guyz shuld give me ur facebook ID

Eben331:
Someone should please help me with this question. Plsssssssssss...

That question.... No be here o.
Whats d final answer?
But ve sent d question to dammy

DrBESTJC:
I think it is wrong because tension is a force whose unit is Newton.


But you can still convert the value in Newton to gramms...thus
F = mg ...where m = F/g = 0.4/10 = 0.04Kg.
Then,multiply by 1000 to convert to gramms = 0.04 * 1000 = 40g

ve u being able to get square root of 2, 13...

DrBESTJC:
Please Maths gurus here:
How can you solve for the squareroot of 2 or 13 or 2225 without calculator?

ve u being able to do this. If no quote me

boyejo124:
lol

smiles.....

Damayogenius18:
...which question is dat( Eben got it,want him to solve it)....av added u to d reading group.

dat surface tension na

Damayogenius18:
..show workings...u are right anyway..

boss pls am on my knees. Na God i use beg u post the corrections 2 ur question

boyejo124:
I'll go for 0.4M. just WURUWURU TO THE ANSWER

If i catch u eh

Damayogenius18:
Frnds..I need some pple to create a reading group.....you can drop ur number with me...the ethics is we read from 8pm - 5am every day from (may)7 mon to june 7 (thurs).. Just a month ...
U can email me or drop ur number if you are interested...

Am interested u ve my number ryt?
Pls who is the author of science & college physics