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energy levelsthe energy levels measured in electron volts ev in which orbiting electrons exist comply with a law of physics which states that energy
ionisationif the amount of external energy is large enough the valence electron can gain sufficient kinetic energy energy of movement to be removed
electrical materialsmaterials which allow an electric current to flow easily are known as conductors and those which prevent the flow of an
particle functionprotonsthe number of protons in an atom determines the kind of materialeghydrogen 1 protonhelium 2 protons lithium 3 protons
atomsif a water molecule could be magnified sufficiently it would be seen to consist of three smaller particles closely bound together these three
moleculeslet us take a piece of matter for example a drop of water and see what happens when it is sub-divided into smaller and smaller portionsthe
i figured out the volume and the width but i have no idea how to use that information to get the height and the
1 which of the following is greater than 43 x 109 a 21 x 109 b 32 x 109 c 53 x 109 d 74 x 108 2 which of
using examples of invertebrate phyla illustrate how the increase in complexity is reflected by their nervous
mr ouma bought two sets of ners for sh 300per set two machanic vice at sh 1000each three set of screw driver at sh 115 per set and tool box for
hi i was wondering what the structure of semi synthetic and synthetic polymers were i have an assignment due tomorrow and i cannot find any
i need help with a few homework questionswe had a substitute and i didn3939t get the chance to finish reading the
two chargeq each are kept 1m apart where should third charge be placed in order to get third charge
find time period and frequency of vibration of water level in a limb of manometer executing simple harmonic
water jet machining is an advanced method for cutting plates using a high-velocity water jet mixed with abrasive powder the jet comes out of a
explain the chemical change that take place in the conversion primary alcohols into secondary
forceforce may be defined as a push or a pull upon an object in the english system the pound 1b is used to express the value of a force for
energythe term energy may be defined as the capacity for doing work there are two forms of energy potential energy and kinetic energypotential
powerthe rate of doing work is called power and it is defined as the work done in unit time as a formula this would bepower work donetime
workin its technical sense work is the product of force and distance and work is done only when a force causes movement we can see this by the
the limit of fx as x approaches 5 is equal to 7 write the definition of limit as it applies to f at this
while the rest of the industrialized engaged in imperial wars the united states was at first reluctant why was imperialism a controversial issue for
assume the metallic ball is spherical with a diameter d 25 cm let3939s also assume it is made out of nickel which has a density of roughly 9
an ostrich can run at speeds of up to 72kmh suppose an ostrich runs 15km at the speed of 58 kmh and then runs another 15km at the speed of 29kmh what
between nitrobenzene and phenol which is more reactive towards chlorine and why upon reaction with chlorine what products can be formed from the two