CBSE > Class 11 | CBSE Board | Homework Help

Admission Test Physics Chemistry Biology Mathematics Applied Maths Accountancy Economics Business Studies English Core हिंदी कोर History Political Science Geography Sociology Psychology Physical Education Computer Science Informatics Practices Painting Reasoning & Mental Ability Legal Studies गणित लेखाशास्त्र जीव विज्ञान व्यवसाय अध्ययन मनोविज्ञान रसायन विज्ञान भौतिक विज्ञान English Elective NCERT हिंदी ऐच्छिक इतिहास राजनीति विज्ञान भूगोल अर्थशास्त्र समाजशास्त्र Engineering Graphics गृह विज्ञान Home Science शारीरिक शिक्षा Multimedia and Webtech English Elective CBSE (Deleted) Entrepreneurship संस्कृत कोर (भास्वती) संस्कृत ऐच्छिक (शाश्वती) Philosophy (Deleted) Biotechnology Financial Market Management Other Subjects Regional Language Information Technology (802)

Ask questions which are clear, concise and easy to understand.

Ask Question

Derive and expresion exxess pressure inside aliquid

Posted by Azad Khan 5 years, 9 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 years, 9 months ago

Consider a liquid drop of radius 'r' . The molecules on the surface of the drop experience a resultant force acting inwards due to surface tension. Therefore, pressure inside the drop will be greater then pressure outside the drop. It provides a force acting outwards perpendicular to the surface, to balance the resultant force due to surface tension. Let the drop be divided into two equal halves.
Considering the equilibrium of the upper hemisphere of the drop, the upward force due to excess pressure will be P π r² , where P is the pressure.
If 'T' is the surface tension then force acting downward along the circumference of the circle due to surface tension is T2πr .
At equilibrium,
P π r² = T 2 π r
P = 2T/r
which is the required pressure.

1Thank You

ANSWER

Bendre sahab kon the? unhone painting ke Kshetra mein kya Kiya?

Posted by Khushi Singhal 5 years, 9 months ago

CBSE > Class 11 > हिंदी ऐच्छिक

2 answers

Atul Bisht 4 years, 9 months ago

pta nahi hoga koi

1Thank You

Sachin Gaming 4 years, 10 months ago

baindre sahab kon the

3Thank You

ANSWER

What chapters we can prepare to score well in the last day

Posted by Dk Khasgiwale 5 years, 9 months ago

CBSE > Class 11 > Physical Education

1 answers

Abhishek Kushwaha 5 years, 9 months ago

Last 6 chapters and ch.no.5- yoga

1Thank You

ANSWER

Objectives of dispersion

Posted by Rohit Sharma 5 years, 9 months ago

CBSE > Class 11 > Economics

0 answers

ANSWER

What happened when one Sodium Peroxide dissolves in water second Lithium nitrate is heated third quicklime is heated with silica

Posted by Rishika Lalwani 5 years, 9 months ago

CBSE > Class 11 > Chemistry

1 answers

Harmanpreet Kaur 5 years, 9 months ago

When sodium peroxide is dissolved in water it will give hydrogen peroxide NA2O2+H2O->NAOH+H2O2 When lithium nitrate is heated 4LiNO3+heat->2Li2O+4NO2+O2 When CaO is heated with silica it gives calcium silicate. CaO+SiO2->CaSiO3

0Thank You

ANSWER

abbasi kranti s kya tatparya h

Posted by Zainab Naushin 5 years, 9 months ago

CBSE > Class 11 > इतिहास