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A spherical marble moving at 9m/s strikes an identical stationary marble so that after collision both the marble make an angle 30° with the line of motion of first marble. Find their final velocity and also find K.E. before collision and after collision.

Posted by Mr. Satym 5 years, 9 months ago

CBSE > Class 11 > Physics

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Sin x - sin y = a and cos x- cos y =b , then the value of cos (x+y) is

Posted by Pawan Kumar 5 years, 9 months ago

CBSE > Class 11 > Mathematics

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College me bhi hindi milti hai kya PCM stream student ko?

Posted by Royal Marine995 5 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

Mayank Roy 5 years, 9 months ago

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College me bhi hindi milti hai kya PCM stream student ko?

Posted by Royal Marine995 5 years, 9 months ago

CBSE > Class 11 > Chemistry

1 answers

Mr. Satym 5 years, 9 months ago

No brthr...

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College me bhi hindi milti hai kya PCM stream student ko?

Posted by Royal Marine995 5 years, 9 months ago

CBSE > Class 11 > हिंदी ऐच्छिक

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What is doppler effect???

Posted by Himanshu Kumar Dubey 5 years, 9 months ago

CBSE > Class 11 > Physics

2 answers

Priyanka Priya 5 years, 9 months ago

It is an increase in the frequency of the sound,light or other waves as the source and observer moves towards each other.the effect cause the sudden change in pitch noticeable in a passing Siren, as well as the red shift seen astronomers.

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Ekta Guleria 5 years, 9 months ago

When ever there is relative motion between source, observer, medium then the frequency of the waves received by observer is always different from frequency of waves emitted by source

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A 50kg of boy stands 1m away from a girl of 45kg.Calculate the force of attraction between them.Explain which will stronger force of feeling or gravitation

Posted by Poornima Rathoure 5 years, 9 months ago

CBSE > Class 11 > Physics

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Define watming up .explain the types of warming -up ?

Posted by Shalini Kumari 5 years, 9 months ago

CBSE > Class 11 > Physical Education

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Consumer equilibrium kya hota hai

Posted by Ayush Jain 5 years, 9 months ago

CBSE > Class 11 > Accountancy

1 answers

Adiii Agrawal 5 years, 9 months ago

?????

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Mayors equation

Posted by Vaibhav Kunal 5 years, 9 months ago

CBSE > Class 11 > Chemistry

2 answers

Priyanka Priya 5 years, 9 months ago

Cp-cv=R

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Anish Physics 5 years, 9 months ago

Cp-Cv=R

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How many chapters are cut in physical education

Posted by Aparna Mehra 5 years, 9 months ago

CBSE > Class 11 > Physical Education

0 answers

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What is paterkarita??? ??

Posted by Karan Chauhan Chauhan 5 years, 9 months ago

CBSE > Class 11 > हिंदी ऐच्छिक

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Write a short note on alteration of generation of bryophytes

Posted by Kafia Ansari 5 years, 9 months ago

CBSE > Class 11 > Biology

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Kabir k dohon me konsa ras h

Posted by Harbhajan Singh 5 years, 9 months ago

CBSE > Class 11 > हिंदी कोर

1 answers

Himanshu Kumar Dubey 5 years, 9 months ago

Shant ras

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What are advantages and disadvantages of sexual reproduction and asexual reproduction

Posted by Deepak Rajput 5 years, 9 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 5 years, 9 months ago

The advantages of Asexual Reproduction are:

It is a faster means of reproduction
Less energy required for reproduction
Number of progeny produced is more

The disadvantage of Asexual Reproduction is:

The daughter offspring look exactly and have the same genetic material as the parent
lack of genetic variation. So as a result the population may go extinct with dramatic changes in environment.

The advantage of Sexual Reproduction is:

It allows for genetic variation due to the involvement of two parents

The advantages of Sexual Reproduction are:

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Is india is secularism

Posted by Dhruv Bali 5 years, 9 months ago

CBSE > Class 11 > Political Science

2 answers

Komal Chhillar 5 years, 9 months ago

Yes, according to anendment 42nd because india has no official religion

1Thank You

Shivansh Patel 5 years, 9 months ago

Yes, India is secularism. By 42nd amendment the word secularism is included in the preamble of the constitution.

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Important chapter for physical education for class 11 final exam

Posted by Harish Jain 5 years, 9 months ago

CBSE > Class 11 > Physical Education

2 answers

Khushreet Aulakh 5 years, 9 months ago

Yesterday was my Physical exam nd mostly questions were frm 2 , 5 , 8

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Kritika Gorai? 5 years, 9 months ago

Last three chapter

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The value of 61/31is

Posted by Binathy Jayaveeran 5 years, 9 months ago

CBSE > Class 11 > Mathematics

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Theoretical value of 6 is ________and_______

Posted by Manaswi Raj 5 years, 9 months ago

CBSE > Class 11 > Physics

1 answers

Tanvi Sharma 5 years, 9 months ago

0.6×10^1

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Guilds were association of

Posted by Saloni Maheshwari 5 years, 9 months ago

CBSE > Class 11 > History

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what is double entry system?

Posted by Mohd Rehan 5 years, 9 months ago

CBSE > Class 11 > Accountancy

2 answers

Varun Singh 5 years, 9 months ago

Kya rehan

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Yogita Ingle 5 years, 9 months ago

Double Entry System of accounting deals with either two or more accounts for every business transaction. For instance, a person enters a transaction of borrowing money from the bank. So, this will increase the assets for cash balance account and simultaneously the liability for loan payable account will also increase.

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First stage of development

Posted by Kaushal Kumar 5 years, 9 months ago

CBSE > Class 11 > Sociology

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Goverment conpany is managed by govenment ministry trueor false

Posted by Anurag Dubey 5 years, 9 months ago

CBSE > Class 11 > Business Studies

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You are tapas / tapasya of A-150 ,mount road, Chennai. You have seen an advertisement in the newspaper, 'The Chennai Times ' for the post of manager (account) in sundaram west side, Chennai. Apply for the post with your complete bio data. (120-150) words

Posted by Kashish Hemwani 5 years, 9 months ago

CBSE > Class 11 > English Core

1 answers

Aadika ?? 5 years, 9 months ago

Yeh questions toh iss saal ka 12th board exam main aaya tha ( Set 2 )

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What is indiffrence curve

Posted by Gulshan Kerai 5 years, 9 months ago

CBSE > Class 11 > Economics

1 answers

Yogita Ingle 5 years, 9 months ago

An indifference curve is a graphical representation of a combined products that gives similar kind of satisfaction to a consumer thereby making them indifferent.Every point on the indifference curve shows that an individual or a consumer is indifferent between the two products as it gives him the same kind of utility.

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Ravindran wants to import 5000 electronic items from a south Korean company.what proof should ravindran present to the south Korean company to prove his credit worthiness ?

Posted by Abhay Yadav 5 years, 9 months ago

CBSE > Class 11 > Business Studies