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An ice-skater, weighing 60 kg moving at 10 m/s glides to a stop. If 80% of the heat generated by friction is absorbed by the ice, the amount of ice melted will be nearly (1) 30 g (2) 14 g (3) 7.1 g (4) 4.1 g ...
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If\ f(x)=\sqrt{1-sin(2x)},f'(x) equals\\\ \\ a)-(cos x + sin x) for\ x\in(0,\pi/4)\\b)(cos x + sin x) for\ x\in(\pi/4,\pi/2)\\c)-(cos x + sin x) for\ x\in(\pi/4,\pi/2)\\d)(cos x + sin x) for\ x\in(0,\pi/4)\\ ...
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Paragraph for Question Nos. 13 to 15 p-amino-N,N-dimethylaniline is added to a strongly acidic solution of X. The resulting solution is treated with a few drops of aqueous solution of Y to yield blue coloration due to the for ...
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Among the following, state functions: A) Internal energy B) Irreversilbe expansion work C) reversible expansion work D) Molar Entrhalpy ...
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At 400K the rms speed of gas X (MW=40) is equal to the most probable speed of gas Y at 60K. The molecular weigth of the gas Y is ...
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The smallest value of k for which both the roots of the equation x2-8kx+16(k2-k+1)=0 are real, distinct and have values at least 4 is ...
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The total no of alpha and beta particles emitted in the nuclear reaction 238U92 ->214Pb82 is ...
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The total no of alpha and beta particles emitted in the nuclear reaction 238U92 ->214Pb82 is ...
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The correct stability order of the following resonance structure is + - + - - + - + H2C=N=N H2C=N=N H2C=N=N H2C=N=N A) I>II>IV>III B) I>III> II>IV C) II>I>III>IV D) III>I>IV>II ...
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A uniform rod of mass=2kg and length l=1m rests upon a smooth horizontal surface.One of the ends of the rod is struck with impulse=2Ns in horizontal direction perpendicular to the rod.As a result the rod obtains a momentum=2N ...
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A uniform rod of mass=2kg and length l=1m rests upon a smooth horizontal surface.One of the ends of the rod is struck with impulse=2Ns in horizontal direction perpendicular to the rod.As a result the rod obtains a momentum=2N ...
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A uniform rod of mass=2kg and length l=1m rests upon a smooth horizontal surface.One of the ends of the rod is struck with impulse=2Ns in horizontal direction perpendicular to the rod.As a result the rod obtains a momentum=2N ...
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Hi,iam facing a problem in determining when the work done by the friction is positive ,zero and when it is negative.Please help ...
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Hi,iam facing a problem in determining when the work done by the friction is positive ,zero and when it is negative.Please help ...
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A:The rate of loss of optical activity during isotopic inversion SN2 is twice the rate of isotope exchange. B:SN2 reaction proceeds through inversion (i)Both true,B is the correct explanation of A (ii)Both true B is not the c ...
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There are infinite equipotential lines all parallel to the line AB in a right angled triangular region ABC as shown.All points on the vertical line have the same potential and proportional to the length of the line. *Image* ( ...
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A:The rate of loss of optical activity during isotopic inversion SN2 is twice the rate of isotope exchange. B:SN2 reaction proceeds through inversion (i)Both true,B is the correct explanation of A (ii)Both true B is not the c ...
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The asymptotes of a hyperbola are x^2+4xy+y^2-2x+2y-2=0 and the hyperbola passes through (1,1) The centre of the hyperbola is? The conjugate axis of the hyperbola is? What is the eccentricity of the hyperbola? ...
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The asymptotes of a hyperbola are x^2+4xy+y^2-2x+2y-2=0 and the hyperbola passes through (1,1) The centre of the hyperbola is? The conjugate axis of the hyperbola is? What is the eccentricity of the hyperbola? ...
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The asymptotes of a hyperbola are x^2+4xy+y^2-2x+2y-2=0 and the hyperbola passes through (1,1) The centre of the hyperbola is? The conjugate axis of the hyperbola is? What is the eccentricity of the hyperbola? ...
