Travelling waves are produced when particle of a medium vibrates in simple
harmonic motion with speed R (say). Change of phase occurs during vibration of
this particle. Explain the equation of a travelling wave with appropriate graphical
representation.
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Answer:
Zinc can displaceNon metals reacts with dilute acidsCalcium reacts with water to formGold plated coins areSodium burns in air and forms Amphoteric oxides areWhich is the most reactive metalWhich is a semiconductorIf unglazed, you should make sure it is intended for the oven, some types of earthenware may be damaged by the heat. The ones meant for the oven (like römertopf) should be fine. Glass. If it is borosilicate glass (sometimes called Jena glass), you can use it in the ovenRahul wants to cook on an electric stove. Help Rahul in finding the right kind of material by quoting proper reasons in support of your answerDifferentiate the various materials given below as metals, non metals, metalloids.Iron,carbon,silicon,oxygen,gold,germanium,platinum,arsenicWrite any three uses of metalsTo make cooking wares.In making electric appliances, electric wires, fridge etc.Sheets of aluminium and iron for buildings materials Diamond is lustrous and graphite is good conductor of electricity.State with proper reasons whether they are metals or Non metalsGallium and cesium have very low melting points.In a graphite molecule, one valence electron of each carbon atom remains free, Thus making graphite a good conductor of electricity. Whereas in diamond, they have no free mobile electron. Hence there won't be flow of electrons That is the reason behind diamond are bad conductor electricity.Name the two metals have low melting and boiling pointsMetalloids usually look like metals but behave largely like nonmetals. Physically, they are shiny, brittle solids with intermediate to relatively good electrical conductivity and the electronic band structure of a semimetal or semiconductorWrite any two properties of MetalloidsMetals refers to the natural elements that are hard, shiny, opaque and dense. Non-metals implies those chemical substances that are soft, non-shiny, transparent and brittle. Most metals are hard, except sodium. Most non-metals are soft, except diamondWrite any four differences between Metals and NonmetalsMagnesium burns in air to produce
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