medwhite0:
DCDCC@ McHenry99

5/5

Pukka36:
DCDCC

5/5


Question No:1076

The ability of an organism to live successfully in an environment is known as

A. resistance


B. competetion


C. succession


D. adaptation



View Explanation

Question No:1077

The most important adaptation of xerophytes is the ability of the protoplasm to

A. resist being damaged by loss of water


B. store sugar and minerals in the vacuoles


C. absorbs water and swell


D. shrink from the cell wall



View Explanation

Question No:1078

A green snake in green grass is able to escape notice from predators because of its

A. disruptive colouration


B. counter shading


C. warning colouration


D. cryptic colouration



View Explanation

Question No:1079

For heterotrophic organisms, competition is least caused by the inadequacy of

A. mates


B. space


C. light


D. nutrients



View Explanation

Question No:1080

An amoeba and a unlaid chicken egg are

A. animal tissue


B. organelles


C. single cell


D. organisms

Osamuyipeace:
(1.) A load of 5N gives an extension of 0.56cm in a wire which obeys Hooke's law. What is the extension caused by a load of 20N?
A. 1.12cm B. 2.14cm C. 2.24cm D. 2.62cm

(2.) Intrinsic semi conductor atoms are bonded together by
A. Covalent bonding B. ionic bonding C. Thermal fusion D. Metallic bonding

(3.) A body accelerates uniformly from rest at 2m/s^2. Calculate its velocity after travelling 9m.
A. 36.00 B. 18.00 C. 6.00 D. 4.50
( All answer in m/s^1)

CAC

Brian10:

One more thing, the focal length of a convex mirror is negative and convex lens positive. Take note

we're talking bout lens...not mirror.

clintonopah:
please your no4 is wrong

medwhite0:

yes.
the fixed point is the center of the body.
it is rotational.

well have given out my ans.

Brian10:

Baba na only that one you do inverse for. The others nkor? Baba check am ooo.. Nor argue

Lol...I'm not arguing.
get the workings

1/f=1/U + 1/V

image distance =U/2
object distance =U
focal length is 10cm

1/10=1/U +2/U

note the reciprocal is for all.
the reciprocal of U is 1/U
the reciprocal of U/2 is 2/U

hope you get it this time.

Brian10:

Sorry sir, check your number 3 calculations properly. Half of U is U/2 not 2/U... It affects the answer

V=U/2
But 1/V = 2/U
THE INVERSE.

medwhite0:
@ McHenry99

i think motion about the center of a body is rotational
while translational motion is the motion about the edges of the body.

translation motion is the movement of the whole body...rotation motion is the circular motion of a body at a fixed point.

McHenry99:
The half life of a radioactive element is 9days. What fraction of the atoms has decayed in 36days
a. 1/16 b. 1/4 c. 1/32 d. 15/16


An electric kettle with negligible heat is rated at 2000watts. if 2kg of water is put in it how long will it take the temperature to rise from 20° to 100°c [specific heat capacity =4200Kg/K]
a. 336s b. 420s c. 168s d. 84s


A convex lens of focal length 10cm is used to form a real image which is half the size of the object. How far from the object is the image?
a. 45cm b. 30cm c. 15cm d. 20cm


When a ball rolls on a smooth level ground, the motion of its centre is
a. translational b. random c. oscillatory d. rotational



Good morning guys.

The half life of the element is 9days...so we have
36/9=4
ie. it disintegrates in four times.

9days. 9days. 9days. 9days
1------1/2-------1/4--------1/8-------1/16

the remaining mass after disintegration is 1/16
but the fraction of atoms decayed
= 1-1/16
=15/16



Heat energy =mass × specific heat capacity ×temperature rise

Heat energy =power ×time

power × time = mass × specific heat capacity × temp.

2000 × time =2 × 4200 × (100-20)
time =336s



focal length = 10cm
image distance(V) =half of objet distance ie 1/2U
object distance = U

mirror formula

1/f= 1/U + 1/V
1/10 = 1/U + 2/U
1/10 = 3/U
U=30cm

but the question says the distance between the image and the object
i.e. image distance + object distance
remember the image distance is half the object distance
=30cm + 15cm =45cm



Translational motion.

Brian10:

C A C D

2/4

Ijehk7:
b,a,d,d

2/4

eghos12:



add

1/4

Rjasan:
I b no science dat year 1.C 3.C 4.D
.
Number 2 is confusing wetin I go find.

Check the question again...I made a mistake it has been modified.

clintonopah:
add

1/4

Pukka36:
DADA....Na guessing thingz

2/4

dharay88:

A,B,B,Ç...
Feed me more plz...

Try again.

The half life of a radioactive element is 9days. What fraction of the atoms has decayed in 36days
a. 1/16 b. 1/4 c. 1/32 d. 15/16


An electric kettle with negligible heat is rated at 2000watts. if 2kg of water is put in it how long will it take the temperature to rise from 20° to 100°c [specific heat capacity =4200Kg/K]
a. 336s b. 420s c. 168s d. 84s


A convex lens of focal length 10cm is used to form a real image which is half the size of the object. How far from the object is the image?
a. 45cm b. 30cm c. 15cm d. 20cm


When a ball rolls on a smooth level ground, the motion of its centre is
a. translational b. random c. oscillatory d. rotational



Good morning guys.

Pukka36:
Happy New Month Sirs/Madams

Happy New month Ma.

Goodnight guys.

Osamuyipeace:
CAACD

5/5

SouffleX:


CACCD

4/5

Princecalm:
C C B C C

1/5

Osamuyipeace:
CAACD

5/5

Pukka36:
How possible is that Or isn't that butane?

it's butanol.

Ada96:

aaaad

3/5

Fill each gap with the most appropriate option from the list following the gap.

When the soldiers saw that resistance was ....... they stopped fighting?

A. inadequate


B. inefficient


C. futile


D. successful



View Explanation

Question No:1392

Fill each gap with the most appropriate option from the list following the gap.

You should read all the ...... carefully before you decide where to go on holiday?

A. brochures


B. prospectuses


C. tickets


D. handouts



View Explanation

Question No:1393

Fill each gap with the most appropriate option from the list following the gap.

The Emir and conqueror of the enemy territories .......next week?

A. arrives


B. are to arrive


C. arrive


D. are arriving



View Explanation

Question No:1394

Fill each gap with the most appropriate option from the list following the gap.

We ought to have visited the Governor ......?

A. isn't it


B. oughtn't we


C. shouldn't we


D. haven't we



View Explanation

Question No:1395

Fill each gap with the most appropriate option from the list following the gap.

He didn't sense Obi's presence in the room, did he?

A. Yes, he did


B. No, he did


C. Yes, he didn't


D. No, he didn't

Osamuyipeace:
DCCBA

Got all.

Pukka36:
M'following Ur lead sir.....Which one wrong?

number 1 is D

Pukka36:
ACCBA.....Question 2 and 3 is the same

4/5....I must say it...you're good tho.

RobinHez:
this makhenry sef! the guy no dey tire....

Bro...nope i'm not...lol