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Preeti Dabral 2 years, 9 months ago

According to Newton the change in pressure & volume in air is an isothermal process.
Therefore he calculated,v =√(p/p) on substituting the require value he found, the velocity of sound was not in close agreement with the observation value. Then Laplace pointed out the error in Newton’s formula. According to Laplace the change in pressure and volume is an adiabatic process. So he calculated the value of sound as, v =√(yr/p) on putting require value he found velocity of sound as 332m/s very closed to observed theory.

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Preeti Dabral 2 years, 9 months ago

Read-Only Memory (ROM) is a storage area that is used to store instructions. The contents of read-only memory are permanent. That means, switching off the power supply will not erase the data stored in ROM. The data stored in ROM is either unchangeable or requires special operations to change the contents. A normal user cannot write anything in read-only memory.
Random Access Memory (RAM) also called the main memory of the computer, is a storage area that acts as a rough working area for the programs It is a read-write memory. That means a user can read the contents stored in it as well as he writes the contents on to the memory. RAM temporary storage area that means, the con cannot be permanently stored in random a memory. The contents of random access to me are lost when the computer is switched off. That is why it is also called "volatile memory".

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Preeti Dabral 2 years, 9 months ago

It is quite true, after the Wavewalker was irreparably damaged by the colossal wave, everyone on-board contributed to save it.  

Not only the elders on the boat worked hard, kept nerves, and cooperated with one another, the six year old son, and the seven year old daughter behaved courageously and bravely also in the face of the storm. The six year old son Jon reassured his dad that he was not afraid to die if he could be together with his family. So these fearless words motivated the author to do his best to save the damaged boat. The author was really a great sailor as he repaired the damaged boat, steered it and made it steady in the raging storm.  

Larry Vigil and Herb Seigler, the professional sailors hired in S. Africa helped the narrator in tackling the Southern Indian Ocean. They proved to be real saviours when the ship had been flooded with the sea water. They pumped like madmen to keep the water levels reasonably low. Each and every person on Wavewalker did their best to save the boat. Their courageous efforts were nothing but sheer hard work, keeping nerves, and cooperation. So, they survived the disaster.

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Preeti Dabral 2 years, 9 months ago

The Niyamas are positive duties or observances. In Indian traditions, particularly Yoga, niyamas and their complement, Yamas, are recommended activities and habits for healthy living, spiritual enlightenment, and a liberated state of existence. It has multiple meanings depending on context in Hinduism.

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Preeti Dabral 2 years, 9 months ago

You need to know the equation of motion. The force for the pendulum is given by F=−kx. Newtons equation tell you F=ma=mx¨. So you need to solve

mx¨=−kx.(1)

You know that the solution will be of oscillatory form. So you set x=Acos(2πt/T) and you want to obtain T. Plugging this ansatz into the equation (1), you obtain

−m(2π)2T2Acos(2πt/T)=−kAcos(2πt/T).

You see that the equation is fulfilled if

m(2π)2T2=k.

Solving for T, you obtain the result.

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Sonalika . 2 years, 9 months ago

Yes
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Preeti Dabral 2 years, 9 months ago

बफर समाधान एक पानी विलायक आधारित समाधान है जिसमें एक कमजोर एसिड और कमजोर एसिड के संयुग्म आधार, या एक कमजोर आधार और कमजोर आधार के संयुग्मित एसिड युक्त मिश्रण होता है। वे कमजोर पड़ने पर या उनमें थोड़ी मात्रा में एसिड/क्षार मिलाने पर पीएच में बदलाव का विरोध करते हैं।

Maahi Sahu 1 year, 10 months ago

जब किसी विलयन में थोड़ी सी मात्रा में अम्ल या छार मिलने पर विलयन के ph मे कोई परिवर्तन नहीं होता है । उसे बफर विलयन कहते हैं।
  • 1 answers

Preeti Dabral 2 years, 9 months ago

Under the health insurance policy, financial coverage is provided to policyholders and their family members against medical expenses that arise due to illness or accident. Depending upon the policy, the premium may be payable either in lump-sum or in installments. Health insurance usually provides either direct payment or reimbursement for expenses associated with illness and injuries. It is a contract of indemnity as the insured can claim on the basis of medical expenses.

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Adrija Saha 2 years, 9 months ago

Genghis Khan also known as Chinggis Khan, was the founder and first khagan of the Mongol Empire.
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If no external forces acts on a system of particles then the momentum of the system remains conserved.
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Preeti Dabral 2 years, 9 months ago

Due to global warming, the polar ice caps and mountain glaciers would melt and the amount of water in the ocean would increase. It leads to a rise in the sea level and the melting of glaciers and sea-ice due to warming.
Effects of Global Warming are:

  1. Sea level will rise 48 cm by the end of the twenty-first century.
  2. Increase the incidence of annual flooding.
  3. Insect-borne diseases like malaria, and leads to shifting in climatic boundaries, making some regions wetter and other dries.
  4. The agricultural pattern would shift and the human population, as well as the ecosystem, would experience change.
  5. Peninsular India would be submerged.
  6. Global warming refers to the increase in average ground temperatures on earth. These higher temperatures across the planet are caused by an intensification of the greenhouse effect.

Janvee Kumari 2 years ago

Thankyou
  • 1 answers

Preeti Dabral 2 years, 9 months ago

Physical Purity: In mean cleanliness of internal body and in yoga we are able to purify our internal organs with different yogic / shuddhi kriyas. Postural Deformities: Good Posture is imp for leading a good physical appearance and it can be maintained by yoga.

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Gagan Tyagi 2 years, 9 months ago

Tomorrow my exam
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Preeti Dabral 2 years, 9 months ago

The properties of Karl Pearson’s Coefficient of Correlation are:

  1. Karl Pearson’s Correlation coefficient r has no unit. It is a pure number. It means a unit of measurement is not a part of r. It is independent of the origin and scale.
  2. The value of the correlation coefficient lies between {tex}- 1 \leq r \leq 1{/tex}. If the value of r lies outside this range, it indicates there is some error in the calculation.
  3. A negative value of r indicates an inverse relation. A change in one variable is associated with change in the other variable in the opposite direction.
  4. If r is positive it indicates a direct relation and the two variables move in the same direction.
  5. The converse of the theorem,i.e.,r=0, is not true, that is uncorrelated variables and need not necessarily be independent. Uncorrelation between the variables X and Y simply imply the absence of a linear relationship between them.
  6. Therefore, if the data is too large, step deviation method is used, which makes the calculation of correlation coefficient easy.
  • 4 answers

Preeti Dabral 2 years, 9 months ago

6

Shinjini Ghosh 2 years, 7 months ago

6

Harsh Maurya 2 years, 9 months ago

Ans=6

M.S.Bhati Bhati 2 years, 9 months ago

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Mahendar Bisht 2 years, 9 months ago

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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Preeti Dabral 2 years, 9 months ago

Inferential statistics use measurements from the sample of subjects in the experiment to compare the treatment groups and make generalizations about the larger population of subjects. There are many types of inferential statistics and each is appropriate for a specific research design and sample characteristics.

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Adrija Saha 2 years, 9 months ago

For the voyage, they professionally designed the boat. It was tested several times in harsh conditions to make sure of its journey. They prepared themselves mentally and physically so that they can undergo such a voyage.

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