Question
What type of force holds together the layers of
graphite?Solution
Graphite consists of carbon atoms arranged in layers of hexagonal lattices. These layers are loosely held by weak van der Waals forces, allowing them to slide over one another easily — a property that makes graphite useful as a lubricant and in pencils.
A vendor sets the price of an item 60% more than its cost and sells it after giving a 35% discount. What is the profit or loss percentage?
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A shopkeeper offers a 10% discount on an article and still manages to earn a 12% profit. If the marked price of the article is Rs. 2800, calculate the c...
A bag of cost price of Rs. 7000 is marked up by a certain percentage, and a discount percent of twice the markup percent is offered on it. If there is a...
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