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paresh Ghosh
Questions and answers by visitors named
paresh Ghosh
Questions (10)
1. A man throws a body of mass 500gm with a velocity of 10m/s vertically upward on a planet he weight of the body on the planet.
1 answer
416 views
2. If the wavelength of Deepika’s voice is 2 and that of Ashwaria is 5m respectively in air. Find the frequency of
1 answer
386 views
3. A house wife uses “a fire tong pair” of length 20cm to lift a piece of burning coal of mass 200gm. If she applies force
1 answer
395 views
4. A bulb is joined to a battery of e.m.f 6V. A steady current of 0.5 A flows through circuit. Calculate the total energy
2 answers
1,184 views
5. An aluminium cessel of mass 200g, contains 0.5 litre of water. What is the heat required to raise the temperature of the
1 answer
486 views
7. 50g of steam at 100 degree centigrade is passed into a mixture of 100g of ice and 200gm of water at 0 degree centigrade. Find
1 answer
844 views
8. What would be the final temperature of the mixture when .5 g of ice at -10 degree are mixed with 250g of water at 30 degree
2 answers
580 views
9. 2 kg of water is contained in a 2.5 KW electric kittle. Assuring that the heat capacity of the kettle is negligible.
2 answers
537 views
10. The velocity of light in a transparent liquid is 1.8X10cm/second, while in vacuum it is 3X10^3cm/second. Find how much the
2 answers
511 views
11. If 238U92 emits successively four alpha particles two beta particles, what will be the atomic number and mass number of the
3 answers
496 views
