Nuel25846:
If an object just begins to slide on a surface inclined at 30o to the horizontal,the coefficient of friction is

A. √3
B. √3/2
C. 1/√2
D. 1/√3

D

Nuel25846:
The property which makes alcohol
soluble in water is the A. boiling point B. hydrogen bonding C. ionic character D. covalent nature

B

castrokiller:
At a fixed point below a liquid surface, the pressure downwards is P1 and pressure upwards is P2. It can be deduced that

A. P1 > P2
B. P1 ≥ P2
C. P1 < P2
D. P1 = P2

Ans==>A. pressure increases with depth

A certain radioactive source emits radiations that were found to be deflected by both magnetic and electric fields. The radiations are

A. beta rays
B. gamma rays
C. x-rays
D. unltr-violet rays

ans is probably A

Two long parallel wires X and Y carry currents 3A and 5A respectively. If the force experienced per unit length by X is 5 x 10-5N, the force per unit length experienced by wire Y is{UTME 2007}
A. 3 x 10-5N B. 3 x 10-6N C. 5 x 10-4N D. 5 x 10-5N

Hint to answer
Following the above formula and supporting it with Newton’s third law that states the if object X exert a force on object y, object y will exert the same force on X but in opposite direction.

For two parallel current carrying conductor, regardles of their current, they will exert the same force on each other but in opposite direction

You can visit for solution to some of past UTME questions: http://servantboy.com/category/physics-for-a-level-&-utme/

Nuel25846:
If an object just begins to slide on a surface inclined at 30o to the horizontal,the coefficient of friction is

A. √3
B. √3/2
C. 1/√2
D. 1/√3

The coefficient of static of friction = tanQ
Q = is the angle of inclination
coefficient = tan 30 = 0.557
0.557 in surd form = 1/√3

an alternative form of a gene is known as?

vikkeee:
an alternative form of a gene is known as?

Allele

pabostt:
Two long parallel wires X and Y carry currents 3A and 5A respectively. If the force experienced per unit length by X is 5 x 10-5N, the force per unit length experienced by wire Y is{UTME 2007}
A. 3 x 10-5N B. 3 x 10-6N C. 5 x 10-4N D. 5 x 10-5N

Hint to answer
Following the above formula and supporting it with Newton’s third law that states the if object X exert a force on object y, object y will exert the same force on X but in opposite direction.

For two parallel current carrying conductor, regardles of their current, they will exert the same force on each other but in opposite direction

You can visit for solution to some of past UTME questions: http://servantboy.com/category/physics-for-a-level-&-utme/

All I can recollect is F=Bil, force per unit length would be (F/l)

Optimist1998:
Chemistry
Chlorine, consisting of two isotopes of mass numbers 35 and 37, has an atomic mass of 35.5.
The relative abundance of the isotope of mass number 37 is?

Which of the following devices function on redox reaction? l. Dry cell ll. Car battery III. Electric generator

A. l and lll only
B. ll and lll only
C. l and ll only
D. l, ll and lll


The metal that liberates hydrogen from cold water in bubbles only is
A. Na
B. K
C. Ca
D. Al


What is the molar mass of an alkyne with the formula CxH14 ? (H = 1, C = 12)
A. 86g
B. 92g
C. 98g
D. 110g
E. 112g


Which of the following pairs of salts undergo hydrolysis?A. AlCI 3 and NH4 CI
B. AICI3 and NaCI
C. FeCI3 and KCI
D. Na2SO4 and K2SO4

*Inorder for this to make any meaning try as much as possible to explain your answers; this will held us all to identify our strengths/weaknesses*

Stand to be corrected, i think the first one is 3/4 or 0.75. I guess the second is I & II. The third should be Na, fourth should be 92. Still scrutinizing the 5th

Optimist1998:
Comman see Moment questions

---

A man holds a 100 N load stationary in his hand. The combined weight of the forearm and hand is
20 N. The forearm is held horizontal, as shown


What is the vertical force F needed in the biceps?{cambridge may/june 2014 p11 ques 12}
A 750 N
B 800 N
C 850 N
D 900 N



A uniform plank AB of length 5.0 m and weight 200 N is placed across a stream, as shown below


A man of weight 880 N stands a distance x from end A. The ground exerts a vertical force FA on the plank at end A and a vertical force FB on the plank at end B.
As the man moves along the plank, the plank is always in equilibrium.The man stands a distance x = 0.50 m from end A. Use the principle of moments to
calculate the magnitude of FB.
{cambridge may/jun 2014 p21 q3}


Source: servantboy.com

Couldn't get the answer to the first one

Hy.. . I'm new here

Can someone graduate from futo with first class in civil engineering

SamanN:

Couldn't get the answer to the first one

number 1 is 850

SamanN:

Couldn't get the answer to the first one

number 1 is 850N

SamanN:

Couldn't get the answer to the first one

I think number 2 is 4460Nm

absool:
Can someone graduate from futo with first class in civil engineering

Yea

castrokiller:
Yea

are you schooling in futo

reeblaze:
Hy.. . I'm new here

Welcome

castrokiller:
Welcome

have you seen anybody with first class in engineering in futo

Optimist1998:
Chemistry
Chlorine, consisting of two isotopes of mass numbers 35 and 37, has an atomic mass of 35.5.
The relative abundance of the isotope of mass number 37 is?

Which of the following devices function on redox reaction? l. Dry cell ll. Car battery III. Electric generator

A. l and lll only
B. ll and lll only
C. l and ll only
D. l, ll and lll


The metal that liberates hydrogen from cold water in bubbles only is
A. Na
B. K
C. Ca
D. Al


What is the molar mass of an alkyne with the formula CxH14 ? (H = 1, C = 12)
A. 86g
B. 92g
C. 98g
D. 110g
E. 112g


Which of the following pairs of salts undergo hydrolysis?A. AlCI 3 and NH4 CI
B. AICI3 and NaCI
C. FeCI3 and KCI
D. Na2SO4 and K2SO4

*Inorder for this to make any meaning try as much as possible to explain your answers; this will help us all to identify our strengths/weaknesses*

. Y is 25 c c d d.... Don't understand d last one

castrokiller:
At a fixed point below a liquid surface, the pressure downwards is P1 and pressure upwards is P2. It can be deduced that

A. P1 > P2
B. P1 ≥ P2
C. P1 < P2
D. P1 = P2

A certain radioactive source emits radiations that were found to be deflected by both magnetic and electric fields. The radiations are

A. beta rays
B. gamma rays
C. x-rays
D. unltr-violet rays

A I think, pls reply if am wrong or right. D second one should be A

Nuel25846:
If an object just begins to slide on a surface inclined at 30o to the horizontal,the coefficient of friction is

A. √3
B. √3/2
C. 1/√2
D. 1/√3

D

by...... Newbie

absool:
are you schooling in futo

Am a jambite. But proper studying and consistency you can make a first class

felix00:
A I think, pls reply if am wrong or right. D second one should be A

explain your choice first

I trust jamb......dere got no more questions......jst make sure u go thru past questions very well especially frm 2000......... jst like last year when there virtually did copy and paste from series for their questions

absool:
have you seen anybody with first class in engineering in futo

Sorry I misinterpreted this..... I thought you asked if someone can make a first class...... Sorry for that

castrokiller:
explain your choice first

. Pressure increase with depth? Am bad at explaining tinz

felix00:
. Y is 25 c c d d.... Don't understand d last one

35x/100+37y/100=35.5 eqn 1
X+y=100 eqn 2
Multiply eqn 1 by 100--- 35x+37y=3550
Eqn 2 x=100-y____ sub it in 35x+37y=3550
The rest is history

Would it be possible to choose an exam center that's located outside the state you did your jamb registration? For instance, can somebody leaving in Lagos be allowed to choose an exam centre in Port Harcourt?

Three drops of a 1.0 mol dm-3 solution of NaOH are added to 20 cm3 of a solution of pH 8.4. The pH of the
resulting solution will be A. Close to that of pure water B. Unaltered C. Greater than 8.4 D. Less than 8.4

pH=-Log[H+] where [H+] = concentration of H+
pH= 8.4
=-[log0. 6]
=0.2212. =====move nine places
=0.00000000221moles/dm3 or 2.21x10^-9mol/dm³

C=n/V n=CV
equating the two; we have it as C¹V¹=C²V²
Ist Concentration= 1mol/dm³
1st volume = ?
2nd concentration =(from the pH) 0.00000000221
2nd volume = 20cm³/1000 =0.02dm3
Employing the formula 1xV¹=2.21x10^-9 x 0.02
=4.42x10-¹¹

Coming back to pH
pH= -Log[4.42x10-¹¹]
pH=10.4
Ans pH will increase
Note: if you dont convert the 20cm³ to dm³ you'll get a pH of 7.4 and you might end up choosing A or D

Cc: Nuel25846

reeblaze:
Hy.. . I'm new here

Welcome on board