 Sleeve scale = 17.50 mm
Thimble scale 28 x 0.01 = 0.28 mm
Total reading = 17.50 + 0.28
= 17.78 mm
= 1.778 x 10^{2} m  There is a weaker intermolecular force in liquids than in solids ü1
 Rectilinear propagation of light/ light travels in a straight lineü1
 Magnetism is easily induced in them ü1. The dipoles of the keepers from a closed loop with those in the magnets hence protecting the magnets from being demagnetized
 n = ^{360}/_{θ}= −1
^{360}/_{x}−1=7
^{360}/_{x}=8
8 x = 360^{0}x = 45

 Adding impurities eg detergents
 Increasing the temperature/heating the water
 Bulb should be small and made of thin material
 Radiation
 Gauze conducts heat away and the temperature above is lower than ignition temperature of the gas. ü1. It burns above the gauze because the gauze become hotter than the ignition temperature of the gas required to ignite it. ü1

 Principle of moments states that for a system in equilibrium, the sum of clockwise moment about a point must be equal to the sum of the anticlockwise moment about the same point
 Clockwise moment = Anticlockwise moment
0.16 (x) = 0.24 ( 1−x)
0.16 x = 0.24−0.24 x
0.4x = 0.24
x = 0.6
the pivot is 0.6 m from 16 g mass

 Atmospheric pressure at sea levels
 Leakages of the values and pistons of the lift pump
 When the temperature increases to high levels the bimetallic expands and bends. Brass expands more than iron therefore it bends such that it makes the contacts completing the circuit.
 The negative charge on the rod initially neutralizes the positive charge on the leaf and the plate. As the rod is moved towards the cap, electrons are repelled to the leaf making it fall. As the rod is brought nearer, the excess negative charge flows to the leaf and plate where they repel each other making the leaf to rise.
 Hard magnetic materials are difficult to magnetize but once magnetized they retain magnetism for a long time while soft magnetic materials are magnetized easily but do not retain their magnetism.

Mass of water = 90 – 70 = 20g
Density of water = 1000 kg/m^{3} = 1 g/cm ^{3}Volume of water =^{mass}/_{density}=^{20}/_{1}=20cm^{3}Volume of water = volume of liquid A
Mass of liquid A = 94 g – 70 g = 24 g
Density of liquid A =^{mass}/_{volume}=^{24}/_{20}= 1.2 g/cm ^{3} or 1200 kg/m^{3}

 The pressure in the pen is higher than that outside the pen (Atmospheric pressure) this causes the ink to flow outwards due to difference in pressure.
 P =^{ F}/_{A}=^{120}/_{0.006}=20000Nm^{2}F = P X A
= 20000 X 0.50
= 10, 000N 
 Should be incompressibleShould be non corrosive
 Should have high boiling point and low melting point.
 p_{1}h_{1}g_{1} = p_{2} h_{2} g
1360 x 1.25 x 10 =(^{74−x}/_{100})x 13.6 x 10
17000 = (74–x) 1360
17000 = 100640 – 1360 x
1360x = 83640
x = 61.5 m
 Paraffin less dense than water hence could occupy larger column to balance with pressure due to water column.
 L_{1} lights brighter than L_{2} and L_{3}

 V = ^{4}/_{3}πr^{3}=^{4}/_{3}×3.142×(0.03)^{3}= 1.13112 x 10^{4 }cm^{3}
 A=πr^{2}= 3.142 x 10^{2}= 314.2 cm^{2}
 V drop = V patch
1.13112 x 10^{4} = 314 x t
t =^{1.13112 x 104/}_{314}= 3.6023 x 10^{7} cm 
 oil drop is spherical
 oil patch is circular
 oil spread until it is monolayer

 Like poles repel unlike poles attract

 The magnet is repelled. End A becomes a north on magnetization
 Easily magnetized and demagnetized.
 Attraction occurs between unlike poles of a magnet and can also occur between a magnet and un magnetised magnetic material


 Watches or measuring instruments

 Density of mixture =^{mass of mixture}/_{volume of mixture}total volume = 1800 + 2200 = 4000 cm^{3}Mass of sea water = P x V =^{1000x1800}/_{100000} = 1.8 kg
Mass of sea water = P x V = ^{2025x2200}/_{100000}= 2.255 kg
total mass = 1.8 + 2.255= 4.055 kg
Density of mixture =^{4.055}/_{4000x106}= 1012.75 kg/m^{3} or 1.013 g/cm^{3} 