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A body of mass 1kg is attached to a string on an inclined plane at an angle 37degrees with the horizontal.The coeff. of friction is 0.8. Find the tension in the string

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given: y^2=a^2 + b^2sin^2x , prove that y+y2 = a^2 b^2/y^3
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An open pipe is dipped in water so that 10cm of it's length is under water resonates to a frequency of 500hz. If it is dipped so that 7cm of its length is under water and resonates to a frequency of 425hz. Find the length of the pipe.

a) 18cm

b) 9cm

c)27cm

d)36cm

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1)which of the following compounds can liberate CO2 form NaHCO3 ?

a) p-cresol

b) phenol

c) p-aminophenol

d) 2,4,6-trinitrophenol

2)which of the following has the most acidic hydrogen?

a) CH3CN

b)CH3NO2

c)CH(CH)3

d) (C6H5)3CH

3) Which of the following shows the correct order of acidity of ethane,ethanol,acetylene and cyclopropane?

a) cyclopropane< ethane< ethanol<acetylene

b) ethane<cyclopropane<acetylene<ethanol

d) cyclopropane<ethane<avetylene<ethanol

4) which of the foll. will decrase the acidity of phenol?

a) -NO2

b) -CN

c) -CH3

d) -CHO

5) The correct order of decreasing acidity of the compounds of cyclopentane is

a) cyclopentanone

b) 2m 4-pentanedione

c) cyclopentanecarboxylic acid

plzz give the reasons for ue answers.......

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I'm very weak in organic chemitry. Plzz suggest me a good book from organic chemistry which contains the basic principles and fundamentals......

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Two identically charged particles are fastened to the two ends of a spring of spring constant 100N/m and natural length 10cm. The system rests on a smooth horizontal table. If the charge on each particle is 2.0 x10-8 C,find the extension in the length of the spring.Asuume that the extension is small compared to the natural length.Justify this assumption after you have solved the problem.
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Two identically charged particles are fastened to the two ends of a spring of spring constant 100N/m and natural length 10cm. The system rests on a smooth horizontal table. If the charge on each particle is 2.0 x10-8 C,find the extension in the length of the spring.Asuume that the extension is small compared to the natural length.Justify this assumption after you have solved the problem.
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hi everyone!!!! plzz don't be angry for posting sumthing not related to academics.......but i thought u guys shudn't miss this.......hope u like it......
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`A BEAUTIFUL LUV STORY:He met her at a party, she was so outstanding, many guys chasing her, while he was so normal,and nobody paid attention to him. At the end of the party, heinvited her to have coffee with him, she was surprised, but as he was polite, she agreed. They sat in a nice coffee shop, he was too nervous to say anything, she felt uncomfortable, she thought, please, let me back home.Suddenly he asked the waiter : `would you please give me some salt ' ? I'd like to put it in my coffee.Everybody stared at him, so strange !His face turned red, but, still, he put the salt in his coffee and drank it.She asked him curiously: why you have this hobby?He replied: when I was a little boy, I was living near the sea, I liked playing in the sea, I could feel the taste of the sea, salty and bite, just like the taste of the salty coffee. Now every time I have the salty coffee, I always think of my childhood, think of my hometown, I miss my hometown so much, I miss my parents who are still living there.While saying that, tears filled his eyes.She was deeply touched. That's his true feeling, from the bottom of his heart.A man who can tell out he is homesick, he must be a man who loves home, cares about home, has responsibility of home. Then she also started to speak, spoke about her faraway hometown, her childhood, her family. That was a really nice talk, also a beautiful beginning of their story. They continued to date. She found actually he was a man who met all her demands: he had tolerance, was kind hearted, warm, careful... he was such a good person but she almost missed him ! Thanks to his salty coffee !Then the story was just like every beautiful love story: the princess married to the prince, then they were living the happy life...And, every time she made coffee for him, she put some salt in the coffee, as she knew that's the way he liked it.After 40 years, he passed away, left her a letter which said:My dearest,please forgive me, forgive for one whole life lie. This was the only lie I said to you -- the salty coffee.Remember the first time we dated ?I was so nervous at that time, actually I wanted some sugar, but I said salt. It was hard for me to change so I just went ahead. I never thought that could be thestart of our communication! I tried to tell you the truth many times in my life, but I was too afraid to do that, as I have promised not to lie to you foranything. Now I'm dying, I am afraid of nothing so I tell you the truth: I don't like the salty coffee, what a strange bad taste...but I have the salty coffeefor my whole life since I knew you, I never feel sorry for anything I do for you. Having you with me is my biggest happiness for my whole life. If I can live for the second time, I still want to know you and have you for my whole life, even though I have to drink the salty coffee again. Her tears made the letter totally wet.Someday, someone asked her: what's the taste of salty coffee ?It's sweet. She replied.Try devoting yourself to someone who can drink salty coffee for you whole life................................. `
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so sweet....
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tht innocent look of a child will surely melt hearts.....
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