Question
In circular motion the direction of velocity changes at
_______ points.Solution
In circular motion the direction of velocity changes at every point (the magnitude remains constant). Therefore, the tangential momentum will change at every point. But kinetic energy will remain constant as it is given by 1/2mv2 and v2 is the square of the magnitude of velocity which does not change.
A shopkeeper sells an item for ₹7200 and gains 20% on the cost price. If he sells the same item at ₹8000, what will be his percentage gain?
The combined cost price of two items, A and B, is ₹1,120. Item A is marked up by 25%, and item B by 40%. Both are sold with a 10% discount on their ma...
The marked price of a smartphone is Rs. 8,400, and the profit earned from its sale is Rs. 1,200. If the ratio of the cost price to the selling price of ...
A person named 'X' purchased a mobile phone and a headphone. He sells the mobile phone at a 20% profit and the headphone at a 10%...
The cost price of two articles is same. One article is sold at 20% profit and another at 10% loss. If the selling price of one article is Rs. 999 more t...
Anil sold 12 cameras at a loss of 10%. If he had sold all the cameras for Rs. 1440 more, his overall profit would have been 20%. What is the cost price ...
Rajendra purchased a bike for Rs 72,500/- and a laptop for Rs 32,000/-. He sold the bike at a profit of 20% and the laptop at a loss of 25%. Find his ov...
A shopkeeper bought two televisions at a certain amount. He sold the first television at a 30% profit and the second television at a 20% loss. If the se...
A fruit seller buys oranges at the rate of 12 for ₹60 and sells them at the rate of 8 for ₹48. Find his percentage profit.
The selling price of an item, when sold at a 35% profit, is Rs. 168 higher than its selling price when sold at a 5% loss. If the ...
Relevant for Exams:
