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How much would you have to sleep? Janiye...

How much would you have to sleep? Janiye akhir kitna der Sona chahiye by Sadhak bhaiya

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The earth circles the sun once a year. How much work would have to be done on the earth to bring it to rest relative to the sun, (ignore the rotation of earth about - its own axis) Given that mass of the earth is 6 × 10^(24) kg and distance between the sun and earth is 1.5 × 10^(8) km-

A vessel having certain amount of oxygen at certain pressure and temperature develops a very small hole and 4 g of oxygen effuses out. How much hydrogen would have effused out of the same vessel had it been taken at the same pressure and temperature.

Wal - Mart offers the following discounts on consumables on the list price based on the quantity of goods purchased ( all goods have the same list price of $60) : Two friends , John and Jack separatly purchase 8 lbs 15 lbs of goods respectively. How much would they have been n able to save if they purchased the goods together instead of purchasing separately ?

Consider a spacecraft in an elliptical orbit around the earth At the lowest point or perigee of its orbit it is 300km above the earth's surface at the highest point or apogee it is 3000km above the earth surface (a) What is the period of the spacecraft's orbit (b) using conservation of angular momentum find the ratio of spacecraft's speed at perigee to its speed at apogee (c) Using conservation of energy find the speed at perigee and the speed at apogee (d) it is derised to have the spacecraft escape from the earth completrly if the spacecraft's rockets are fired at perigee by how much would the speed have to be increased to achieve this? What if the rockets were fired at apogee Which point in the orbit is the most efficient to use ?

In a gobar gas plant, gobar gas is formed by bacterial fermentation of animal refuse. It mainly contains methane and its heat of combustion is -809kJ mol^(-1) according to following equation: CH_(4) +2O_(2) rarr CO_(2)+2H_(2)O , DeltaH =- 809 kJ How much gobar gas would have to be produced per day for a small village of 50 families, it it is assumed that each family requires 20000 kJ of energy per day? The methane content in gobar gas is 80% by mass.

How would you account for the following? (i)The atomic radii of the metals of the third (5d) series of transition elements are virtually the same as those of the corresponding members of the second (4d) series. (ii)The E^(@) value for the Mn^(3+)//Mn^(2+) couple is much more positive than that for Cr^(3+)//Cr^(2+) couple or Fe^(3+)//Fe^(2+) couple. (iii)The highest oxidation state of a metal is exhibited in its oxide or fluoride.

Gobar gas obtained by bacterial fermentation of animal refuse contains mainly methane. The heat of combustion of methane to CO_2 and water (gas) is given by CH_4(g) + 2O_2(g) to CO_2(g) + 2H_2O (g) + 809 kJ . How much gobar gas would have to be produced per day for a small village community of 100 families, if we assume that each family has to be supplied 20,000 kJ of energy per day to meet all its needs and that the methane content in gobar gas is 80% by weight?

How would you accont for the following? Lanthanoids form primarily + 3 ions, while the actinoids usually have higher oxidation states in their compounds, + 4 or even +6 being typical.

Two circular loops are placed with their centres separted by a fixed distance. How would you orient the loops to have (a) the largest mutual inductance (b) the smallest mutual inducatance?

How would you account for the following : Phenols are much more acidic than alcohols.

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