weac 2016 physics theory answers..
THEORY ASPECTS....
1a)
Dielectric strength is the property of an insulating
material to retain material to retain electrical
properties
11bi)
-Infra-red wave
-Geiger muller counter
-Scintillation counter
11bii)
Irradiation of solar energy
11c)
Charge(q)=1.0*10^-19C
Electric field intensity(E)=1200NC^-1
Weight of the oil drop=?
E=F/q
1200=F/1.0*10^-19
F=1200*1.0*10^-19
F=1.2*10^3*10^-19
F=1.2*10^-16N
11d)
R=100ohm, L=0.05H, C=0.25uF
V=220v, f=50Hz
11di)
Impedance(z)=sqroot(R^2+(Xl-Xc)^2)
Xl=2*pie*fl
Xl=2*(22/7)*50*0.05
Xl=15.71ohm
Xl=(1/2*pie*fc)
Xc=1/78.55*10^-6
Xc=10^6/78.55
=12730.7ohm
Z=sqroot(100^2+(15.71^2-12730.7^2)
Z=sqroot(10000+2.63*10^16
Z=sqroot(2.63*10^16)
Z=1.62*10^16ohm
11dii)
Vrms=IZ
I=220/1.62*10^16
=1.36*10^-14
10a)
Critical angle is the angle of incidence in the
optically densed medium when the angle of refraction
is 90degrees
10b)
Anti-note are created by region of maximum
displacement in a wave.
9a.i thermal equilibrium - The condition under which
two substances in physical contact with each other
exchange no heat energy.
The net force is the vector sum of all the forces that
act upon an object. That is to say, the net force is the
sum of all the forces, taking into account the fact that
a force is a vector and two forces of equal magnitude
and opposite direction will cancel each other out.
9a)
i)Foundamental interval: is the value arbitrarily
assigned to the difference in temperature between two
fixed points (such as the ice point and steam point)
on a temperature scale, in order to define the scale.
ii)Thermal equilibrium: is a higher temperature object
which is in contact with
a lower temperature object that transfers heat to the
lower temperature
object. The objects will approach the same
temperature, and in the
absence of loss to other objects, they will then
maintain a constant
temperature.
b) Uses of hydraulic press br /> - It is used in
metal forming operations
- For moulding
ii)
8a) Net force: The net force is the vector sum of all
the forces that act upon an object. It is also the sum
of all the forces, taking into account the fact that a
force is a vector and two forces of equal magnitude
and opposite direction will cancel each other out.
8b)
The law of conservation of linear momentum states
that the total
momentum of a system of particles remains constant,
so long as no
external forces act on the system.
e.g Firing a bullet from a gun or a radioactive
nucleus spontaneously emitting an alpha particle.
1a.The net force is the vector sum of all the forces
that act upon an object. That is to say, the net force
is the sum of all the forces, taking into account the
fact that a force is a vector and two forces of equal
magnitude and opposite direction will cancel each
other out.
1b.The Principle of the Conservation of Momentum
states that: if objects collide, the total momentum
before the collision is the same as the total
momentum after the collision (provided that no
external forces - for example, friction - act on the
system).
The Principle of the Conservation of Momentum states
that: if objects collide, the total momentum before the
collision is the same as the total momentum after the
collision (provided that no external forces - for
example, friction - act on the system).
9aiii. The value arbitrarily assigned to the difference
in temperature between two fixed points (such as the
ice point and steam point) on a temperature scale, in
order to define the scale.
The difference between the values recorded by a
thermometer at two fixed points; for example, the
difference between the resistances recorded by a
resistance thermometer at the ice point and steam
point : Or are in the same time peratureperature
(5)
-for exploration of space
-it is used for war fare
-it is used for launching of satellite
(6)
(a)doping is the process of producing an impure
semiconductor by adding
foreign elements to the pure semiconductor
(b)Doping a semiconductor improves the number
of charge carriers
(3)
-smoke
-aerosol
-dust particle
(4)
Given flux density( =0.217
Force(F)=9.6*10^-12N
Speed(v)=?
F=Bqv
9.6*10^-12= 0.12* 1.6* V
V=(9.6*10^-12)/0.192*10^-19
=50*10^-12+9
v=50*10^7
=5*10^8ms^-1
(2)
Velocity(u)=20ms^-1
Angle(tita)=40 degree
At maximum height, h
V^2=u^2 + 2gh
U^2 sin^2 tita+u
u= 20^2* (sin 40 degree)^2
u=20^2*(sin 4o degree)
u=400* 0.3455
u=138.2ms^-1
(1)
(a)
impulse(I)=F*t
F=ma= m(v/t)= M((d/t)/(t))
f=M(l/T)/T)= MLT^-2
I=MLT^-2 * T
I=MLT^-1
(b)
Acceleration(a)=v/t=(d/t)/t
a=d/t^2= L/T^2= LT^-2
©
WOrk(w)=f*d
W=MLT^-2 * L
W=ML^2T^-2
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1a)
Dielectric strength is the property of an insulating
material to retain material to retain electrical
properties
11bi)
-Infra-red wave
-Geiger muller counter
-Scintillation counter
11bii)
Irradiation of solar energy
11c)
Charge(q)=1.0*10^-19C
Electric field intensity(E)=1200NC^-1
Weight of the oil drop=?
E=F/q
1200=F/1.0*10^-19
F=1200*1.0*10^-19
F=1.2*10^3*10^-19
F=1.2*10^-16N
11d)
R=100ohm, L=0.05H, C=0.25uF
V=220v, f=50Hz
11di)
Impedance(z)=sqroot(R^2+(Xl-Xc)^2)
Xl=2*pie*fl
Xl=2*(22/7)*50*0.05
Xl=15.71ohm
Xl=(1/2*pie*fc)
Xc=1/78.55*10^-6
Xc=10^6/78.55
=12730.7ohm
Z=sqroot(100^2+(15.71^2-12730.7^2)
Z=sqroot(10000+2.63*10^16
Z=sqroot(2.63*10^16)
Z=1.62*10^16ohm
11dii)
Vrms=IZ
I=220/1.62*10^16
=1.36*10^-14
10a)
Critical angle is the angle of incidence in the
optically densed medium when the angle of refraction
is 90degrees
10b)
Anti-note are created by region of maximum
displacement in a wave.
9a.i thermal equilibrium - The condition under which
two substances in physical contact with each other
exchange no heat energy.
The net force is the vector sum of all the forces that
act upon an object. That is to say, the net force is the
sum of all the forces, taking into account the fact that
a force is a vector and two forces of equal magnitude
and opposite direction will cancel each other out.
9a)
i)Foundamental interval: is the value arbitrarily
assigned to the difference in temperature between two
fixed points (such as the ice point and steam point)
on a temperature scale, in order to define the scale.
ii)Thermal equilibrium: is a higher temperature object
which is in contact with
a lower temperature object that transfers heat to the
lower temperature
object. The objects will approach the same
temperature, and in the
absence of loss to other objects, they will then
maintain a constant
temperature.
b) Uses of hydraulic press br /> - It is used in
metal forming operations
- For moulding
ii)
8a) Net force: The net force is the vector sum of all
the forces that act upon an object. It is also the sum
of all the forces, taking into account the fact that a
force is a vector and two forces of equal magnitude
and opposite direction will cancel each other out.
8b)
The law of conservation of linear momentum states
that the total
momentum of a system of particles remains constant,
so long as no
external forces act on the system.
e.g Firing a bullet from a gun or a radioactive
nucleus spontaneously emitting an alpha particle.
1a.The net force is the vector sum of all the forces
that act upon an object. That is to say, the net force
is the sum of all the forces, taking into account the
fact that a force is a vector and two forces of equal
magnitude and opposite direction will cancel each
other out.
1b.The Principle of the Conservation of Momentum
states that: if objects collide, the total momentum
before the collision is the same as the total
momentum after the collision (provided that no
external forces - for example, friction - act on the
system).
The Principle of the Conservation of Momentum states
that: if objects collide, the total momentum before the
collision is the same as the total momentum after the
collision (provided that no external forces - for
example, friction - act on the system).
9aiii. The value arbitrarily assigned to the difference
in temperature between two fixed points (such as the
ice point and steam point) on a temperature scale, in
order to define the scale.
The difference between the values recorded by a
thermometer at two fixed points; for example, the
difference between the resistances recorded by a
resistance thermometer at the ice point and steam
point : Or are in the same time peratureperature
(5)
-for exploration of space
-it is used for war fare
-it is used for launching of satellite
(6)
(a)doping is the process of producing an impure
semiconductor by adding
foreign elements to the pure semiconductor
(b)Doping a semiconductor improves the number
of charge carriers
(3)
-smoke
-aerosol
-dust particle
(4)
Given flux density( =0.217
Force(F)=9.6*10^-12N
Speed(v)=?
F=Bqv
9.6*10^-12= 0.12* 1.6* V
V=(9.6*10^-12)/0.192*10^-19
=50*10^-12+9
v=50*10^7
=5*10^8ms^-1
(2)
Velocity(u)=20ms^-1
Angle(tita)=40 degree
At maximum height, h
V^2=u^2 + 2gh
U^2 sin^2 tita+u
u= 20^2* (sin 40 degree)^2
u=20^2*(sin 4o degree)
u=400* 0.3455
u=138.2ms^-1
(1)
(a)
impulse(I)=F*t
F=ma= m(v/t)= M((d/t)/(t))
f=M(l/T)/T)= MLT^-2
I=MLT^-2 * T
I=MLT^-1
(b)
Acceleration(a)=v/t=(d/t)/t
a=d/t^2= L/T^2= LT^-2
©
WOrk(w)=f*d
W=MLT^-2 * L
W=ML^2T^-2
stay tune here and keep refreshing this page for
your answers to come. we will post it here as
soon as we are done.
Keep reloading.
Answers Now loading.
We Are Posting For Free.
Tell Your Friends, Class mates, Enemies about moonzone9.blogspot.com
KEEP REFRESHING THIS PAGE, WE WILL POST THE ANSWERS NOW.
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