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2017 Waec GCE Physics Obj and Theory Answers Now Available

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2017 Waec GCE Physics Obj and Theory Answers

1).A
2)B
3)A
4)B
5)D
6)B
7)B
8)B
9)
10)
11)
12)D
13)C
14)D
15)
16)
17)C
18)B
19)C
20)B
21)A
22)D
23)B
24)A
25)C
26)D
27)C
28)D
29)A
30)
31)A
32)C
33)C
34)
35)C
36)A
37)C
38)B
39)D
40)D
41)B
42)D
43)D
44)A
45)C
46)B
47)D
48)B
49)B
50)C

[9/14, 10:49 AM] Chidiebere Scofield: *PHYSICS OBJ*


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[9/14, 10:49 AM] Chidiebere Scofield: Physics
8ai)

Force is a push or pull which changes a body’s state of rest or uniform motion in a straight line.

II)a) field force
b) contact force
=================
8bi)
Bodies streamlined in
Shape move through fluid so as to oppose or overcome the motion of the fluid

II) a) fish
B) submarine
==================
8c)

Mass= 1.3 kg
F= 1.2 m
V= 7.0 m/s

Drawing

II) Acceleration
Note , V²= U² + 2as

Where S=r=1.2 m

(7.0)²= 0²+2× a (1.2)

= 49/2.4 = 2.4a/2.4

a = 20.4

B) Force=?
From force = MA
Force =1.3×20.4
Force =25.52

🌏🌏
✔✔✔✔
[9/14, 10:49 AM] Chidiebere Scofield: *DITO DITO*

*Question one*
(a) Horizontal speed just before it strikes floor = ucos(theta)
= 10cos0°
= 10 m/s

(b) t = √(2g/h)
= √(2*10*1)
= √20
= 4.47s

Question 4
(a) given: u = 20m/s
t = 4s
g = 10m/s²
h = ?
Using s = ut – ½gt²
s = 20(4) – ½(10)(4)²
s = 0m

(b) The inference is that after 4s, the ball returns back to the plane of projection

Question 3
Magnetic materials: ¶ Iron ¶ Cobalt ¶ Nickel

Question 2
¶ medical uses
¶ welding and cutting
¶ military uses for defense and counter measures

READ ALSO :   2018 Waec Gce Technical Drawing Answers Now Available

Question 5
The factors that determine the location of a solar power station are
¶ Intensity of sun light
surface slope
¶ feeder capacity of the distribution center
[9/14, 10:49 AM] Chidiebere Scofield: Phy-Theory
2)
i)used ineye surgery
ii)used for the precise cutting of flat material
iii)used for measuring distances
================================
3)
i)iron
ii)steel
iii)nickel
[9/14, 10:49 AM] Chidiebere Scofield: Phy-Theory
2)
i)used ineye surgery
ii)used for the precise cutting of flat material
iii)used for measuring distances
================================
3)
i)iron
ii)steel
iii)nickel
================================
5)
i)availability of constant sunlight
ii)nearness to power grid
iii)must be closer to both skilled and unskilled labour
================================
[9/14, 10:49 AM] Chidiebere Scofield: *Question 9*
(a) Poor conductors of heat application: ¶ Coat (Trapped air in between the fabric)
¶ The hair and the fur of animals are bad conductors of
heat and they protect them from cold .

(b) Renewable: Water, corn stalk
Non-renewable: coal, natural gasgas

(c) A closed is a physical system so far removed from other systems that it does not interact with them.

d) heat required to melt = mc∆ + ml
*NB*: Not sure of the temperature given, if it is -3°C or -5°C, However, *Using -3°C*
Heat = (0.1×2200×3)+(0.1×2.26×10^6)
= 226660 J

e) (i) Given: 75 heart beats in 1 min
Therefore in 1 hour, we have (75×60) heart beats = 4500 heart beats
Also given: 2J of energy is expended in 1 heart beat
Therefore for 4500 heart beats, energy expended = (4500×2) J = 9000J

e) (ii) Energy = mc∆
9000 = (0.25×4200×∆)
9000 = 1050∆
∆ = 9000/1050
Temperature rise = 8.57°C
[9/14, 10:49 AM] Chidiebere Scofield: 8ai)
Force is a push or pull which changes a body state of rest or of uniform motion in a straight line
8aii)
The two types of force are
*constant force
*field force
*magnetic force
*gravitational force
=====
5)
i)availability of constant sunlight
ii)nearness to power grid
iii)must be closer to both skilled and unskilled labour
[9/14, 10:49 AM] Chidiebere Scofield: ================================
SECTION-A ANS 5 ONLY
================================
4a)
Time (t)=4secs
V=0ms^-1
pie call,V^2=U^2+2gh
O^2=20^2+2(-10)h
0=400-20h
20h/20=400/20
h=20m
4b)
the magnitude of the initial speed (u) is equal to the magnitude of the height attained
================================
6)
A P-type seme-coductor is an extresic semi conductor which has been diped with a trivalent impurity wheel holes are majority charge carries and electron are the majority charge carries
2)
i)used ineye surgery
ii)used for the precise cutting of flat material
iii)used for measuring distances
================================
3)
i)iron
ii)steel
iii)nickel
================================
5)
i)availability of constant sunlight
ii)nearness to power grid
iii)must be closer to both skilled and unskilled labour
====================
[9/14, 10:49 AM] Chidiebere Scofield: Phy Theory
SECTION-A ANS 5 ONLY
================================
4a)
Time (t)=4secs
V=0ms^-1
pie call,V^2=U^2+2gh
O^2=20^2+2(-10)h
0=400-20h
20h/20=400/20
h=20m
4b)
the magnitude of the initial speed (u) is equal to the magnitude of the height attained
================================
6)
P-type semi conductors are created by dopung an intrisic semi conductor with acceptor impurities.
================================
2)
i)used ineye surgery
ii)used for the precise cutting of flat material
iii)used for measuring distances
================================
3)
i)iron
ii)steel
iii)nickel
================================
5)
i)availability of constant sunlight
ii)nearness to power grid
iii)must be closer to both skilled and unskilled labour
=================
SECTION B
=================
8ai)
Force is a push or pull which changes a body state of rest or of uniform motion in a straight line
8aii)
The two types of force are
*constant force
*field force
*magnetic force
*gravitational force
=====
[9/14, 10:49 AM] Chidiebere Scofield: ​Physics Obj✍✅

READ ALSO :   junior waec 2019 questions for all subjects

​1-10- ACBAABCABC​

​11-20- CADDCBABBA​

​21-30- CABADBCCCA​

​31-40- BAABCACACB​

​41-50- ABBACBADAB​

Verified✅

WAEC GCE 2017/2018 PHYSICS OBJECTIVE AND THEORY ANSWERS – NOV/DEC EXPO

Thursday,14th September, 2017

Physics 2 (Essay) – 08.30 hrs. – 10.00 hrs.

READ ALSO :   WAEC GCE Agricultural Science Specimen 2017: Check WAEC GCE Agric Practical Full Specimen

Physics 1 (Objective) – 10.00 hrs. – 11.15 hrs.

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