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2016 NECO GCE PHYSICS QUESTION AND ANSWERS NOW AVAILABLE FOR FREE
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EDUBRAZEE 12:36 Thu, 17 Nov 2016

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THUR 17th November 2016
PHYSICS(obj and essay)2:00pm-5:00pm

PHYSICS OBJ:
1-10: BCBBEDBECD
11-20: EEBACDCBED
21-30: BACBBDBEDE
31-40: AEACDDBACC
41-50: ADEBDEBCEC
51-60: CBCABDBBDE



(2a)
Difference between mass and weight
Mass:
(i) Mass is the measure of the amount of matter in a body.
(ii) Mass is denoted using m or M.

Weight:
(i) Weight is the measure of the amount of force acting on a mass due to the acceleration due to gravity.
(ii) Weight usually is denoted by W. Weight is mass multiplied by the acceleration of gravity

(2b)
W=mg
W=Weight, m=mass, g=acceleration due to gravity

(5a)
boiling point of a liquid is d point at which d saturated vapour pressure is equal to atmospheric pressure.

(5b)
quantity of heat 1^2 RT
given that
1=3A
R=12n
T=25*60=1500s
quantity of heat= 3^2*12*1500
=9*12*1500
=162000

(12a)
Fundamental quantities are the basic quantities that provide the standard units of mesurenment example is length while derived quantities are quantities obtained from the fundamental quantites in form of combination example is force

(12b)
(i)it opposes motion
(ii) the liniting frictional force is independent of the surface area in contact

(12c)
the centre of gravity of a body is defined as the part in which the resultant weight of a body appears to act

(12d)
f=60Hz, amplitude=6cm, d=4cm
(i)velocity V=wr where r=d=4cm
=2^fr
=2*3.142*60*4/100
=15.08m/s

(ii)acceleration,a =w^2r
=Vw
=2*3.1423*60*15.08
=5686.37m/s^2




(13ai)
wheel-barrow is termed second class lever because its load is between the fulcrum and the effort

(13aii)
TABULATE
FIXED PULLEY
-it consist of a wheel and a shaft and is used in conjuction with a belt to transfer energy to another fixed pulley
-the input force and output force are equal
MOVABLE PULLEY
-it consist of a shell,a movable wheel and a rope
-the input and output put forces are not equal

(13bi)
-fahrenheit scale
-kelvin scale
13bii)
-fahrenheit scale -32degre^f-212degree^f
-kelvin scale -273k-373k

(13c)
given that mass of copper ball=30g=0.03kg
temperature of copper ball=180degree census
mass of calorimeter=80g=0.08kg


(14ai)
Snell's law of refraction states that the ratio of sine of angle of incidence to the sine of angle of refraction is constant for a given pair of media

(14bi)
i-to measure the velocity of sound in air
ii-it is used for oil exploration
iii-it is used to determine the depth of the sea

(14bii)
Music

-Uniform vibration
-Constant frequency of vibration
-Music is good for hearing

Noise
-irregular vibratiom
-no fixed frequencies of vibration
-noise is bad for hearing

Note pie must be writing down in symbol

(14c)
L = 3pie/4
0.7 = 3pie/4
0.7x4/3 = pie
Pie= 0.93
V= F pie

340=f x 0.93
F = 340/0.93 = 365.59
F= 365.6HZ


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Replies

Guest Mon 18 May 2015
I want to try
Guest Mon 18 May 2015
airtel has no transfer code, it won't work.
Guest Tue 19 May 2015
hope it works
Guest Tue 19 May 2015
Wat abt glo
Guest Tue 19 May 2015
What about etisalat transfer


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