CBSE > Class 11 > Physics | CBSE Board | Homework Help

Hydraulic machines are machinery and tools that use liquid fluid power to do simple work, operated by the use of hydraulics, where a liquid is the powering medium.

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Why we use venturimeter

Posted by Simran Sian 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Shivani Sharma 7 years, 1 month ago

A device used for measuring the rate of flow of fluid flowing through a pipe. The working of venturimeter is based on the principle of Bernoulli equation.

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A unit vector associated with a vector A has magnitude one and is along the vector A n equal to A upon Mod A

Posted by Krishna Devvanshi 7 years, 1 month ago

CBSE > Class 11 > Physics

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Tell about the topic..... MOMENT OF FORCE.... {Main main points only } Plss...its urgent ☹️☹️✌️✌️

Posted by Shruti G 7 years, 1 month ago

CBSE > Class 11 > Physics

4 answers

Abhilash Rai 7 years, 1 month ago

Moment of inertia is same as mass but in rotation motion . I=mr^2

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Aman Kumar 7 years, 1 month ago

To alll

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Aman Kumar 7 years, 1 month ago

By the way, "HAPPY CHHATH PUJA" ??

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Aman Kumar 7 years, 1 month ago

1) Moment of inertia depends upon the axis of rotation............. 2)Different object have different M.O.I ... 3) M. O. I=Mass × (distance) ^2 [since, distance b/w axis of rotation and center of mass of the object ]

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Yield point corresponds to which point in stress strain curve and why?

Posted by Love Dashora 7 years, 1 month ago

CBSE > Class 11 > Physics

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What is a time period of an pendulum present in a car which is moving on the rotational track?

Posted by ???. Pragati 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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Tangential acceleration of the tip of blade is 54.37m/s² and cebtripetal acceleration 150.3m/s² find the value of linear acceleration of the tip of the blade

Posted by Priyanka Deshmukh 7 years, 1 month ago

CBSE > Class 11 > Physics

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What is gravitational constana?

Posted by Ajay Sahu 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

???. Pragati 7 years, 1 month ago

the constant in Newton's law of gravitation relating gravity to the masses and separation of particles, equal to 6.67 × 10−11 N m2 kg−2

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The radius of a planet is double than that of the earth but their average densities is the same. If the escape velocities of the planet and the earth are vp and ve respectively then prove that vp=2ve

Posted by Xxxx Yyyy 7 years, 1 month ago

CBSE > Class 11 > Physics

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One car moving in a straight covers one third of the distance with 20km/hr and the rest with 60km/hr . What is the average speed?

Posted by Jay Singh 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Karamjeet Singh 7 years, 1 month ago

Let the total distance be S Then speed for S/3 distance =20km/hr Time taken (t)=S/3×20 = S/60 Remaining dist =S-S/3 =2S/3 Time taken = 2S/3×60 =S/90 Avrge speed=total dist. /total time =S/S/60 +S/90 =S/3S+2S/180 =180S/5S =36km/hr

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Time period of one revolution of earth and moon

Posted by Jashan Deep 7 years, 1 month ago

CBSE > Class 11 > Physics

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Two equal forces have their resultant equal to either what is the inclination b/w them

Posted by Maddy Khj 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Sajid Ali 7 years, 1 month ago

120 °

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What can be the angle between ( A+B vector) and (A-B vector)?

Posted by Anish Kumar 5 years, 8 months ago

CBSE > Class 11 > Physics

3 answers

Saba Elias 7 years, 1 month ago

90°

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Shivam Aggarwal 7 years, 1 month ago

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Aman Kumar 7 years, 1 month ago

I think the angle b/w these vectors is 90°.....

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Videos

Posted by Shruti Prajapati 7 years, 1 month ago

CBSE > Class 11 > Physics

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A body is released at a distance far away from the surface of the earth. Calculate its speed when it is near the surface of the earth.

Posted by Navya Sajin 7 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Abhilash Rai 7 years, 1 month ago

Here, u=0 a=9.8 By using V2=u2+2as We get, V2=2as V=√2×9.8×S=13.8√s

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Raheem Hasan 7 years, 1 month ago

(2gh)½

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Obtain the height of a geostationary satellite, where mass of earth is 6.02×10^24 Kg, R=6400 Km, TO=24 hrs

Posted by Navya Sajin 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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Range formula

Posted by Shubham G 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Ravi Singla 7 years, 1 month ago

U*2 sin2theta /g

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What is Kelvin - planck statement

Posted by ???. Pragati 7 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Raj Hindu 7 years, 1 month ago

In which chapter

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Nancy Rajput 7 years, 1 month ago

Kelvin expressed the second law as:- It is impossible, by means of inanimate material agency, to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of the surrounding objects.

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find the area of triangle formed by points O, A and B such that OA=i^+2j^+3k^ and OB= --3i^--2j^+k^.

Posted by Naseem Khan 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Shivam Aggarwal 7 years, 1 month ago

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Polyatomic gases equation ???

Posted by Mahira Sharma 7 years, 1 month ago

CBSE > Class 11 > Physics

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Measuring scales should be made upnof metal whose linear expansivity is negligibly small.Why?

Posted by Yaso Bhujel 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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F=ma

Posted by Aman Sahu 7 years, 1 month ago

CBSE > Class 11 > Physics

3 answers

Aman Kumar 7 years, 1 month ago

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∂Αяѕнαиαα ყα∂Αѵ ??? 7 years, 1 month ago

wao.. New formula..

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Aman Kumar 7 years, 1 month ago

Yah! We know that...

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What is angle of repose?

Posted by Shri Pathak 7 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Aman Kumar 7 years, 1 month ago

The Angle formed after the inclination of a plane about which an object is kept and after keeping on it, the object is sliding along the plane.... This is called Angle of repose.

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Arpit Porwal 7 years, 1 month ago

The angle of repose of a granular material is the steepest angle of descent

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