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A capacitor of capacitance C is charged by a battery of EMF E and internal resistance r. A resistance of 2r is also connected in series with the capacitor. The amount of heat liberated inside the battery by the time capacitor ...

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If the acceleration of an object is zero, are no forces acting on it? Explain. ...

Coronary artery disease is caused by deposits of (a) potassium (b) calcium (c) sodium (d) none of these ...

If x is real,then the maximum value of y=2(a-x)(x+√(x2+b2) ...

When an electric cell is connected to a circuit, electrons flow away from the negative terminal in the circuit. But within the cell, electrons flow to the negative terminal. Explain. ...

Electric power is transferred over large distances at very high voltages. Explain how the high voltage reduces power losses in the transmission lines. ...

What is transcription and transformation in proteins? ...

For the given regular hexagon, find the perimeter and the area of the hexagon. *Image* ...

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Can the normal force on an object ever do work? Explain ...

A married young man of 25 years is not having a child. The possible reason for this is (a) lack of testosterone (b) lack of progesterone (c) excess of progesterone (d) excess activity of pituitary gland ...

pls give the shortest method to solve this quickly *Image* ...

*Image* You can write the mechanism on a paper, scan it (or take a picture of it) and upload it. ...

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What is the difference between a combustible substance and a supporter of combustion? Thanx in advance... ...

Saturated CaC2O4(aq) is prepared and 250 ml of solution is withdrawn and titrated with 6.3 ml of 0.00102 M KMnO4(aq). What is the value of Ksp for CaC2O4? ...

What shoud be the minimum thickness of a coin of radius 'r' so that there is a 1/3 probability that the coin will stand straight? ...

10 ml of a mixture of Na2CO3 and NaHCO3 is titarted with 0.1 M H2SO4 solution. When phenolphthalein is used, it is observed that if 2.5 ml acid solution is added then the solution becomes colourless. After this when one drop ...

*Image* Give the product of the organic reaction given above by showing its favourable mechanism. ...

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When the momentum of a body decreases by 10%, its Kinetic Energy (KE) decreases by a)20% b)40% c)36% d)none of these FULL DESCRIPTION REQUIRED. NO SHORT ASNWER ...

if D = diag(a1 , a2 , a3 , ...... an), where ai ≠0 for all i = 1,2....,n, then show that D-1 = diag(a1-1 , a2-1 , a3-1 , .......... an-1). ...

An aqueous solution of salt (A) gives a white precipitate (B) with NaCl solution. The filtrate gives a black precipitate (C) when H2S is passed into it. Compound (B) dissolves in hot water and the solution gives a yellow prec ...

2.5g of BaO and CaO when heated with excess H2 SO4 , produced 4.713g of mixed sulphates. Find the percentage of BaO present in mixture ...

Calculate the mass of magnesium oxide obtained by burning 2.4 g of magnesium. ...

What is the primary source of nitrogen oxides? (a) burning coal (b) burning wood (c) burning fossil fuels (d) industries ...

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