# Recently Active Questions

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replied2014-06-11 23:35:21
• 1. A 8 kg block is at rest on a horizontal floor. If you push horizontally on the 8 kg block with a force of 20 N, it just starts to move. (a) What is the coefficient of static friction? (b) A 10.0 kg block is stacked on top ...
replied2014-06-11 23:35:07
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replied2014-06-11 22:08:03
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replied2014-06-11 21:41:54
• If f(x1) + f(x2) = f{(x1+x2)/(1+x1x2)} , find f(x). ...
replied2014-06-11 10:36:58
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replied2014-06-11 10:06:18
• A rocket with a lift-off mass 20,000 kg is blasted upwards with a an initial acceleration of 5 m/s^2 .Calculate:- the initial force of the blast :- 1) 1 x 10^5 N 2) 3 x 10^5 N 3) 2 x 10^5 N 4) 4 x 10^5 N ...
replied2014-06-11 07:04:02
• Four metallic plates are arranged as shown in the figure. If the distance between each plate is d then capacitance of the given system between points A and B is (Given d << A) *Image* a) (epsilon_0 A)/d b) 2 (epsilon_0 ...
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• limx→0 sin(πcos2x)/x2 ...
replied2014-06-10 10:38:55
• mathop {lim }limits_{x o 0} frac{{sin (pi {{cos }^2}x)}}{{{x^2}}} = a) - pi b) pi c) frac{pi }{2} d) 1 ...
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replied2014-06-10 02:08:42
• Why does a porter, carrying a heavy load on his back, bend forward? ...
replied2014-06-10 01:40:24
• TWO CONDUCTING plates each of area A are separated by distance d and they are parallel to each other. A conducting medium of varying conductivity fills space between them. the conductivity varies linearly σ to 2σ as we move ...
replied2014-06-09 23:56:23
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replied2014-06-09 23:53:28
• Let f(x) be a real valued function not identically zero satisfies the equation, f(x+yn)=f(x)+(f(y))n for all real x & y and f'(0)≥0 where n(>1) is an odd natural number. Find f(10) ...
replied2014-06-09 23:24:20
• Find 1/2.4 + 1.3/2.4.6 + 1.3.5/2.4.6.8 +....till n terms ...
replied2014-06-09 23:23:29
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replied2014-06-09 23:09:36
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replied2014-06-09 23:08:04
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replied2014-06-09 23:07:15
• find the pint on the curve y^2=4x which is nearest to the point (2, -8) ...
replied2014-06-09 20:41:01
• In the Bohr model of a hydrogen atom, the centripetal force is furnished by the coulomb attraction between the proton and the electron. If {{a}_{0}} is the radius of the ground state orbit, m is the mass, e is the charge on t ...
• \int_{0}^{1}\frac{\log_{e}(1+x)}{1+x^2} ...
replied2014-06-09 19:48:04
• The value of cos {{1}^{o}}cos {{2}^{o}}cos {{3}^{o}}.....cos {{179}^{o}} is a) frac{1}{sqrt{2}} b) 0 c) 1 d) None of these ...
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