1) A man lives on the twelfth floor of an apartment buildingEvery morning he takes the elevator down to the lobby and leaves the buildingIn the evening, he gets into the elevator, and, if there is someone else in the elevator - or if it was raining that day - he goes back to his floor directlyOtherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.2) You can find roads without cars, And roam through forests without trees, Cities exist without houses? Whatever can I be?3) There was a murder on one sunday morningThere are three suspectsThe 1st suspect says quot;It couldnt have been me because I was out shopping.quot; The 2nd suspect says quot;It couldnt have been me because I was out getting the mail.quot; The 3rd suspect says quot; It couldnt have been me because I was working on the yard.quot; Which Suspect was it!4) Mrand MrsWilson have five children, half of them are boys.How is this possible?
aluminium is good conductor, because it “conducts” the electron current or flow of electrons fairly easilyMost metals are considered to be good conductors of electrical current.aluminium copper is just one of the more popular materials that is used for conductors Other materials that are sometimes used as conductors are silver, goldaluminum copper is still the most popular material used for wires because it is a very good conductor of electrical current and it is fairly inexpensive when compared to gold and silver and most other metals do not conduct electricity quite as good as aluminium copper other words we can say, It is the most abundant metallic element on earthAluminum is used in many aspects of semiconductor manufacturingOn the integrated circuit, Al metal lines are commonly used as the main conductor between components, mainly because of its low resistivity (2.7 mohm-cm)As a thin film, it also has good adherence to silicon dioxideAluminum is also the metallization used for the bonding and probing pads on the dieWhen used for IC metallization, Al is usually very lightly doped with other elements such as Si and/or Cu to improve its characteristics and reliabilityIn semiconductor assembly, ceramic packages are composed mainly of aluminaAluminum is also used for wirebonding integrated circuits in ceramic packages.
Atoms that have electrons that are not tightly bound to the protons inside the nucleas are excellent conductorsWhen an applied electric feild is felt the electron doesn't need much convinving to leave the atom and follow the field.
Aluminum is a fair conductor, not as good as copper or silver, and it becomes brittleIn metals the outer electrons are easily pushed from atom to atom, an electron gasVoltage does thisThe atomic arrangement with close, regular arrangement of atoms facilitates this.
Aluminium is an excellent conductorOnly silver, copper and gold are betterIt is the main conductor used in transmission grids (though its relative weakness means it is generally supported by a steel core to the cables)It is a good conductor because it has a populated conduction band in its energy band structureBasically, electrons behave as waves in crystal latticesIf they just behaved as particles they would bash into all the atoms and get nowhereAs waves they can diffract through the lattice.
1He is a dwarf and can't reachAn umbrella would help help him to reachAnothe rperson can press it for himTen he can reach 2A map 3Number 2 is guiltyYou don't ge your mail on sundayBut it could be anyone as it is not said WHERE the murder is 4they are all boys
