₦airaland Forum

GEM19:
Pls what is the cut off mark for Mathematics

simplebb:
Good morning, we will expect updates from you on this today. Thanks for the input so far.

PS, is this info confirmed?? I mean for Technology department

Eben331:
The coefficient of kinetic friction between smooth, dry surface of steel and wood is approximately 0.02. Calculate the force require to pull 15kg block of steel along a horizontal wooden surface at a steady speed of 0.2m/s. (a) 1.94N (b) 2.49N (c) 1.52N (d) 2.94N PLS SHOW UR WORKINGS!!

Gracy3535:
A consequence of global warming is..........(a)air pollution (b)water pollution (c)increased humidity (d)flooding

Bigboy289:
what is the decrease in volume of air when pyrogallol is shaken with 30.00cm3 of air.
A.0.63cm3 .B.0.06cm3 .C.15.00cm3 .D.6.30cm3

Timijo:
Thanks.
Here is another one.
A 15kg monkey hangs from a cord suspended from the ceiling of an elevator. The cord can withstand a tension of 200N and breaks as the elevator accelerates. What was the elevator's minimum acceleration (in magnitude and direction)? Take g=10.0ms-2
THANKS SIR

Myketuale:
please somebody should help me out what weight of HCL is present in 155ml of a 0.540 solution?? thanks

Timijo:
These ones are Physics questions can anyone solve them
1. A bullet of mass 20g travelling horizontally at 100m/s, embeds itself in the centre of a block of
wood 1kg which is suspended by light vertical string 1m, calculate the velocity



M1V1 + M2V2=V(M1+M2)


20/1000(100) + 1(0)=V(20/1000 + 1)


2=51V/50


V=100/51m/s


V=1.961m/s

Eben331:
Drop your number.

SammieDollyP:
Not too encouraging tho' 252.
Least XPected it.

TeflonBlixx:
66.7N

TeflonBlixx:
6.67 Naira?

Eben331:
Freshsteph, this is the question you asked me to repost again. The answers you get are not correct. The answers they get are 84.07N and 44.16N but I dnt knw how they get them.

abeylysis92:
I think it's A and D sha

DrBESTJC:
Abeg bosses here,I need clear explanations to the correct answers to these questions....It's kinda confusing....

CHEMISTRY.

1) A cold aqueous solution of sodium chloride is electrolysed using a graphite anode and an iron cathode. In the course of the electrolysis, the electrolyte is continously stirred. The liquid left after the electrolysis will therefore consist of :
A) Sodium hydroxide solution
B) Chlorine water
C) Pure water
D) Sodium hypochlorite solution
E) Hydrochloric acid solution.

2) If 48000 coloumbs of electricity are required to discharge 0.5 mole of sodium from a molten sodium chloride mass, then the number of coloumbs required to discharge 2 moles of Lead from molten Lead(II) chloride is :
A) 48000
B) 96000
C) 192000
D) 384000
E) 576000

freshsteph:
62.5N and 37.5 N

Gracy3535:
is the answer 10N or 400N