AMAZING PHYSICS FORMULA

PHYSICSAmazing FORMULA

KBSM + KSSM

NEDAVRIEMERAGHMIIVGBEHIGUP

alinaimanarif

CHAPTER EQUATIONS OF MOTION m1u1 +ELAmST2IuC2CO=LLmISI1OvN1 :+ m2v2

2 INELASTIC COLLISION:

m1u1 + m2u2 = (m1 + m2 )v

FORCE & MOTION FORCE:

F = ma

s IMPULSIVE FORCE:
t
SPEED / VELOCITY: v = F = m(v - u)
ACCELERATION: t

a = v - u IMPULSE:
t
Ft = mv - mu

MOMENTUM: p = mv WEIGHT:

2 amazing Physics with Tcer ALINA W = mg

CHAPTER WORK DONE / ENERGY: W = Fs HOOKE’S LAW:

2 POWER: P W E F = kx
t t
= = SPRING CONSTANT:

KINETIC ENERGY: Ek = 1 mv2 k = F
2 x

FORCE & MOTION GRAVITATIONAL POTENTIAL Ep = mgh ELASTIC POTENTIAL ENERGY:
ENERGY:
Ep = 1 Fx = 1 kx2
Eout 2 2
EFFICIENCY: E= Ein x100%

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CHAPTER PRESSURE: P = F PASCAL’S PRINCIPLE:
A F1 F2
3 P = A1 = A2

PRESSURE IN LIQUID: P = r gh P = A1h1 = A2h2

FORCES & PRESSURE Patm = 1.0 X 105 Pa BUOYANT FORCE:
= 76 cm Hg
= 10 m water FB = rVg
= 1 Bar
= 1 atm

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CHAPTER TEMPERATURE OF LIQUID: Boyle’s law
!! " !" P1V1 = P2V2
4 = !#"" " !" X 100 oC PV

TRANSFORMATION OF ENERGY: Pr#"e//ss=ur#"e00 law TCha!"//rl=es’!"00law

1 # = Important Notes:
2
T = (θ ºC + 273) K
mgh = mcθ

Pt = mcθ
HEAT ENERGY: Q =

HEAT LATENT HEAT ENERGY: Q =

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CHAPTER REFRACTIVE INDEX: LENS EQUATION:

5 η = sini 1 = 1 + 1
sinr f u v

= speed in air
speed in medium

= h H (Real)
(Apparent)

= ! %
"#$

LIGHT + OPTIC POWER OF LENS:

P = 1
f

LINEAR MAGNIFICATION:

m= $ = &$
% &%

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CHAPTER

5

POWER OF LENS:
1
P = f

LIGHT + OPTIC LINEAR
MAGNIFICATION:

m = '%
'&

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CHAPTER

6

PERIOD: T = 1
FREQUENCY: f

f = (
)

WAVES SPEED OF v = f
WAVES:

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WAVESCHAPTER

6

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WAVESCHAPTER

6

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CHAPTER

6

λ = ax
D

WAVES λ = wavelength of water waves

a = distance between two dippers

x = distance between two consecutive antinodal line or nodal line

D = distance between dippers and screen

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CHAPTER The wavelength of monochromatic light can be found by the formula: l = ax
a = distance between two slits D
6 x = distance between two consecutive bright fringe or dark fringe
D = distance between slits and screen

When constructive occurs there will be a bright fringe.
When destructive occurs there will be a dark fringe.

WAVES 12 amazing Physics with Tcer ALINA

CHAPTER The wavelength of sound wave can be found by the formula: l = ax
a = distance between two loudspeakers D
6 x = distance between two consecutive loud sound or soft sound
D = distance between loudspeakers and where the sound heard

When constructive occurs there will be a loud sound.
When destructive occurs there will be a soft sound.

WAVES 13 amazing Physics with Tcer ALINA

CHAPTER ELECTRIC CURRENT: ELECTROMOTIVE FORCE:

7 I = " = $% E = I(R+r)
# #
E = V + Ir
POTENTIAL DIFFERENCE:

V = * = , = IR INTERNAL RESISTANCE:
+ -. m=-r

RESISTANCE: = - æ E - V ö
çè I ø÷

R = / = 0! ELECTRICAL POWER:
- 1

ELECTRICITY OHM’S LAW: P = * = , = IV = I2R = /'
. . 2
V = IR

ELECTRICAL ENERGY:

E = Pt

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CHAPTER ROOT MEAN SQUARE VALUE: Vrms = Vp
2
8
Vrms = root mean square voltage (V)

Vp = peak voltage (V)

ELECTROMAGNETISM Irms = Ip
2

Irms = root mean square current (A)

Ip = peak current (A)

TRANSFORMER: Vs = Ns
Vp Np

IDEAL TRANSFORMER: VpIp = Vs Is

NON-IDEAL Efficiency = VsIs x100%
TRANSFORMER: VpIp

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CHAPTER ENERGY CHANGE OF ELECTRON IN AN ELECTRON GUN:

9 Kinetic Energy ⟶ Electrical Potential Energy

1 mv2 = eV v = speed of electron (ms-1)
2 V = potential difference across the electron gun (V)
e = charge of 1 electron (1.66 x 10-19 C)
v= 2eV m = mass of 1 electron (3.11 x 10-31 kg)
m

ELECTRONIC TRANSISTOR – POTENTIAL DIVIDER: V1 + V2 = V

16 amazing Physics with Tcer ALINA V1 = &! V
&!' &"

V2 = &" V
&!' &"

XX == AA Å•+Å•+BBBBB Logic

CHAPTER Gate

9

ELECTRONIC has one or
more

input signals
but only one
output

signal

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CHAPTER

10

- decay − decay − decay

A X ® YA-4 + 24He A X ® YA + -10e A X ® A X + g
Z Z Z Z
Z -2 Z +1

RADIOACTIVITY HALF-LIFE: N = Amount of radioisotope particles after nth half-life
No = Initial amount of radioisotope particles
N = æ 1 ön No n = number of half-life
èç 2 ø÷
NUCLEAR ENERGY:
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E = mc2

m = mass change (kg)
c = speed of light (3 x 108 ms-1)
E = energy changed (J)

CHAPTER GR AVITATIONA L FORCE

3 r

GRAVITATION++KSSM m1 m2

= ! " F = Gravitational force between two objects
" G = Universal gravitational constant

(6.67 x 10-11 N m2 kg-2)
m1 = mass of first object
m2 = mass of second object
r = distance between the center of two objects

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CHAPTER RELATIONSHIP BETWEEN g and G r

3
GRAVITATION++KSSMNewton's Second …………..1
IDEA!
F = mgLaw of Motion

Newton’s Universal = …………..2
Law of Gravitation !

Equation 1 = Equation 2

= !

=
$

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CHAPTER RELATIONSHIP BETWEEN g and G g = Gravitational acceleration
G = Universal gravitational
3 =
( + ℎ)( constant (6.67 x 10-11 N m2 kg-2)
M = mass of object
r = distance between the centers

GRAVITATION++KSSM = r h =
( R ( − ℎ)(
(R+h)
(Radius of Earth,
r R = 6.37 x 106 m) h

R

On the surface At a height Below the surface

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CHAPTER CENTRIPETAL FORCE

3 For an object in a circular motion

GRAVITATION++KSSM F = !"!
#

F = Centripetal force
m = mass of orbiting body
v = linear speed
r = radius of orbit

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CHAPTER CENTRIPETAL FORCE FMass
FSpeed
3 For an object in a circular motion
Fr
GRAVITATION++KSSM F = !"%
#

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CHAPTER CENTRIPETAL ACCELERATION

3 Acceleration of an object in a circular motion

GRAVITATION ++KSSM a = !! r = (R+h)
"
Rh
a = Centripetal acceleration
v = linear speed
r = radius of orbit

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C H A P T E R MASS OF A BODY MEarth r

3 Mass of a body at the centre of an orbit T = time taken for
#$!"" satellite to orbit the
GRAVITATION++KSSM M = %&! Earth

M = Mass (object at center) MSun r
G = gravitational constant
T = time taken for
(6.67 x 10-11 N m2 kg-2) Earth to orbit the
r = radius of orbit Sun
T = Period of revolution

(time taken to circle the orbit)

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CHAPTER 1KEPLER'S All planets move in elliptical orbits
with the sun at one focus
3

GRAVITATION++KSSM Perihelion point MINOR AXIS

a place where the planet is

the closest to the Sun

MAJOR
AXIS

Aphelion point

a place where the planet is

the farthest to the Sun

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CHAPTER KEPLER'S 2 lineA that connects a planet to the Sun sweeps
out equal areas in equal times
3 (Law Of Areas)

GRAVITATION++KSSM time: A to B C to D
area: CFD
=AFB CD
distance: =AB C to D
>>A to B
linear
speed:

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CHAPTER 3 periodThe square of of any planet is

3 KEPLER'S directly proportional to the

(Law Of Period) cube of the radius of its orbit

GRAVITATION++KSSM $ ∝ %

!" = !#
"" "#

largerA planet which orbits with a radius
has a longer orbital period

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CHAPTER LINEAR SPEED v

3 For satellite orbiting Earth h

GRAVITATION++KSSM v= %' R
"

M = Mass of Earth
G = gravitational constant

(6.67 x 10-11 N m2 kg-2)
r = radius of orbit
v = linear speed

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CHAPTER ESCAPE VELOCITY v= (%'
"
3 Minimum velocity needed by an
object on the surface of the Earth
GRAVITATION++KSSM to overcome gravitational force
and escape to outer space

r M = Mass of Earth
M G = gravitational constant

(6.67 x 10-11 N m2 kg-2)
r = Distance of object (From the centre of Earth)
v = linear speed

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CHAPTER GRAVITATION++KSSM

3

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