Physics-
General
Easy

Question

A pendulum beating seconds is taken from the earth to a planet having both the mass and radius half as compared to the earth The time period of the pendulum will be

  1. √2 second    
  2. 1seond    
  3. 2 second    
  4. 4 second    

The correct answer is: 2 second

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the dimensions of (force constant / mass)blank to the power of 1 divided by 2 end exponent are the same as that

the dimensions of (force constant / mass)blank to the power of 1 divided by 2 end exponent are the same as that

physics-General
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Which of the following statement is true

Which of the following statement is true

maths-General
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Find real part of cos to the power of negative 1 end exponent invisible function application open parentheses fraction numerator square root of 3 over denominator 2 end fraction plus fraction numerator i over denominator 2 end fraction close parentheses

Find real part of cos to the power of negative 1 end exponent invisible function application open parentheses fraction numerator square root of 3 over denominator 2 end fraction plus fraction numerator i over denominator 2 end fraction close parentheses

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If 2 tan to the power of negative 1 end exponent invisible function application left parenthesis cos invisible function application x right parenthesis equals tan to the power of negative 1 end exponent invisible function application left parenthesis 2 text cosec  end text x right parenthesis comma then x =

If 2 tan to the power of negative 1 end exponent invisible function application left parenthesis cos invisible function application x right parenthesis equals tan to the power of negative 1 end exponent invisible function application left parenthesis 2 text cosec  end text x right parenthesis comma then x =

maths-General
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The value of sin to the power of negative 1 end exponent invisible function application open parentheses fraction numerator square root of 3 over denominator 2 end fraction close parentheses minus sin to the power of negative 1 end exponent invisible function application open parentheses fraction numerator 1 over denominator 2 end fraction close parentheses is

The value of sin to the power of negative 1 end exponent invisible function application open parentheses fraction numerator square root of 3 over denominator 2 end fraction close parentheses minus sin to the power of negative 1 end exponent invisible function application open parentheses fraction numerator 1 over denominator 2 end fraction close parentheses is

maths-General
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The enthalpy of vapourisation of liquid water using the data :
straight H subscript 2 left parenthesis straight g right parenthesis plus 1 divided by 2 straight O subscript 2 left parenthesis straight g right parenthesis not stretchy rightwards arrow straight H subscript 2 straight O left parenthesis ell right parenthesis semicolon ΔH equals negative 285.77 KJ mol to the power of negative 1 end exponent
straight H subscript 2 left parenthesis straight g right parenthesis plus 1 divided by 2 straight O subscript 2 left parenthesis straight g right parenthesis not stretchy rightwards arrow straight H subscript 2 straight O left parenthesis straight g right parenthesis semicolon ΔH equals negative 241.84 KJ mol to the power of negative 1 end exponent

The enthalpy of vapourisation of liquid water using the data :
straight H subscript 2 left parenthesis straight g right parenthesis plus 1 divided by 2 straight O subscript 2 left parenthesis straight g right parenthesis not stretchy rightwards arrow straight H subscript 2 straight O left parenthesis ell right parenthesis semicolon ΔH equals negative 285.77 KJ mol to the power of negative 1 end exponent
straight H subscript 2 left parenthesis straight g right parenthesis plus 1 divided by 2 straight O subscript 2 left parenthesis straight g right parenthesis not stretchy rightwards arrow straight H subscript 2 straight O left parenthesis straight g right parenthesis semicolon ΔH equals negative 241.84 KJ mol to the power of negative 1 end exponent

chemistry-General
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General
chemistry-

The conversion A to B is carried out by the following path :
Given colon capital delta S subscript left parenthesis A rightwards arrow C right parenthesis end subscript equals 50 e.u.,capital delta S subscript left parenthesis C rightwards arrow D right parenthesis end subscript equals 30
e.u.,capital delta S subscript left parenthesis B rightwards arrow D right parenthesis end subscript equals 20 e.u.
Where e.u. is entropy unit then capital delta S subscript left parenthesis A rightwards arrow B right parenthesis end subscript is

The conversion A to B is carried out by the following path :
Given colon capital delta S subscript left parenthesis A rightwards arrow C right parenthesis end subscript equals 50 e.u.,capital delta S subscript left parenthesis C rightwards arrow D right parenthesis end subscript equals 30
e.u.,capital delta S subscript left parenthesis B rightwards arrow D right parenthesis end subscript equals 20 e.u.
Where e.u. is entropy unit then capital delta S subscript left parenthesis A rightwards arrow B right parenthesis end subscript is

chemistry-General
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chemistry-

A reversible process is taking place at constant temperature and pressure. Then at equilibrium

A reversible process is taking place at constant temperature and pressure. Then at equilibrium

chemistry-General
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chemistry-

Consider the following processes :

For B+Drightwards arrowE+2C, capital delta H will be-

Consider the following processes :

For B+Drightwards arrowE+2C, capital delta H will be-

chemistry-General
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General
chemistry-

From the following bond energies :
H minus H bond energy : 431.37 text end text k J text end text m o l to the power of negative 1 end exponent
C equals C bond energy : 606.10 text end text k J text end text m o l to the power of negative 1 end exponent
C minus C bond energy : 336.49 text end text k J text end text m o l to the power of negative 1 end exponent
C minus H bond energy : 410.50 text end text k J text end text m o l to the power of negative 1 end exponent
Enthalpy for the reaction,

wilbe:

From the following bond energies :
H minus H bond energy : 431.37 text end text k J text end text m o l to the power of negative 1 end exponent
C equals C bond energy : 606.10 text end text k J text end text m o l to the power of negative 1 end exponent
C minus C bond energy : 336.49 text end text k J text end text m o l to the power of negative 1 end exponent
C minus H bond energy : 410.50 text end text k J text end text m o l to the power of negative 1 end exponent
Enthalpy for the reaction,

wilbe:

chemistry-General
General
chemistry-

For a phase change 

For a phase change 

chemistry-General
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chemistry-

The heat change during the reaction 24 gC and 128 gS following the change C plus S subscript 2 end subscript rightwards arrow C S subscript 2 end subscript semicolon capital delta H equals 22 text end text K cal

The heat change during the reaction 24 gC and 128 gS following the change C plus S subscript 2 end subscript rightwards arrow C S subscript 2 end subscript semicolon capital delta H equals 22 text end text K cal

chemistry-General
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General
chemistry-

In which reaction ΔS is positive -

In which reaction ΔS is positive -

chemistry-General
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The heat of combustion of ethanol determined in a bomb calorimeter is -670.48 K. Cals mole-1 at 25°C. What is capital delta H at 25°C for the reaction-

The heat of combustion of ethanol determined in a bomb calorimeter is -670.48 K. Cals mole-1 at 25°C. What is capital delta H at 25°C for the reaction-

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The binding energies per nucleon of Li to the power of 7 and He to the power of 4 are 5.6 MeV and 7.06 MeV respectively, then the energy of the reaction L i to the power of 7 plus p equals 2 open square brackets 2 to the power of H e to the power of 4 end exponent close square brackets  will be

The binding energies per nucleon of Li to the power of 7 and He to the power of 4 are 5.6 MeV and 7.06 MeV respectively, then the energy of the reaction L i to the power of 7 plus p equals 2 open square brackets 2 to the power of H e to the power of 4 end exponent close square brackets  will be

physics-General
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