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A 3m lpng ladder weighing 20 kg leans on a frictionless wall.its fet rest on the floor 1m.find the reactons forces of the wall on the floor.

Posted by Nakshi Shah 7 years ago

CBSE > Class 11 > Physics

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Find the height. Above earth surface when ,g, drops at 36% of g at surface

Posted by Akshay Shrivastava 7 years ago

CBSE > Class 11 > Physics

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Application of pascal law in detail

Posted by Sangeeta Singh 7 years ago

CBSE > Class 11 > Physics

1 answers

Rudransh Kalia 7 years ago

Hydraulic Lift: The image you saw at the beginning of this article is a simple line diagram of a hydraulic lift. This is the principle of working of hydraulic lift. It works based on the principle of equal pressure transmission throughout a fluid (Pascal’s Law). The construction is such that a narrow cylinder (in this case A) is connected to a wider cylinder (in this case B). They are fitted with airtight pistons on either end. The inside of the cylinders are filled with an incompressible fluid. Pressure applied at piston A is transmitted equally to piston B without diminishing, on use of an incompressible fluid. Piston B effectively serves as a platform to lift heavy objects like big machines or vehicles. Few more applications include a hydraulic jack and hydraulic press and forced amplification is used in the braking system of most cars

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Define seabreeze and land breeze

Posted by 345 678 7 years ago

CBSE > Class 11 > Physics

1 answers

Rudransh Kalia 7 years ago

land breeze. The breeze that blows from the land toward the sea after sunset. The land cools more quickly than the ocean, cooling the air above it. The warmer air above the water continues to rise, and cooler air from over the land replaces it, creating a breeze.

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Best you tube channel for physics

Posted by Asit Jy Yadav 7 years ago

CBSE > Class 11 > Physics

2 answers

Asit Jy Yadav 7 years ago

Thanks

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Neha Singh 7 years ago

Yes no doubt

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What is ideal gas temperature?

Posted by Hritik Gupta 7 years ago

CBSE > Class 11 > Physics

1 answers

Rudransh Kalia 7 years ago

One mole of an ideal gas will occupy a volume of 22.4 liters at STP (Standard Temperature and Pressure, 0°C and one atmosphere pressure).

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Why gravitational potential energy is negative?

Posted by Mohit Tripathy 7 years ago

CBSE > Class 11 > Physics

1 answers

Rudransh Kalia 7 years ago

Because a negative amount of work is done to bring an object closer to the Earth, gravitational potential energy is always a negative number when using this reference point. A satellite of mass is launched from the surface of the Earth into an orbit of radius , where is the radius of the Earth.

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a cylinder is rotating on its axis with a constant angular Velocity.if constant force is applied tangentially plot graph showing variation 1) angular velocity 2) angular acceleration with time 3) angular acceleration with time 4) kinetic energy of rotation of K with w

Posted by A B 7 years ago

CBSE > Class 11 > Physics

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Application of First law of thermodynamics to adiabatic process ?

Posted by Akshansh Jangir 7 years ago

CBSE > Class 11 > Physics

2 answers

Ankush Upadhyay 7 years ago

There is no exchange of heat energyso dq is zero. dq= du+dw ;hence du=-dw.

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Shubham Kumar 7 years ago

8r8r8

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Calculate the orbital velocity of a satellite of mass 100kg revolving the earth at a height 6400km above the surface of earth

Posted by Shravani Py 7 years ago

CBSE > Class 11 > Physics

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A rubber cord of length 10cm is stretched upto 12cm. If cross sectional area is 1mm^2 . Find the velocity of a missile of mass 5gram which is hit upon with the rubber cord. Given, Young's modulus of rubber = 5*10^8 N per m^2.

Posted by Pragya Kumari 7 years ago

CBSE > Class 11 > Physics

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Find amount of work done in blowing a soap bubble of surface tension 0.6 N/m from 2cm radius to 5 cm radius ???

Posted by Amit Singh 7 years ago

CBSE > Class 11 > Physics

1 answers

Sajid Ali 7 years ago

Given, F=0.6 Initial volume=4/3π2^3 =33.5 final volume=4/3π5^3 =53 therefore displacement=19.5 therefore work done =F×d =11.7

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Why pressure is an scalor quantity

Posted by Ayush Pandey 7 years ago

CBSE > Class 11 > Physics

2 answers

Päñdüráñ G Mãdāvî 7 years ago

Because it has magnitude. As well as direction also

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Ankush Upadhyay 7 years ago

because it has magnitude. as well as direction also.

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Hi... Guys

Posted by Neha Bhatt 7 years ago

CBSE > Class 11 > Physics

3 answers

Shreya Das 7 years ago

Hlo

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Ankit Singh 7 years ago

Hllo

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Ankit Sihag 7 years ago

Hello

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Dopler's effect? Please

Posted by Kartik ? 7 years ago

CBSE > Class 11 > Physics

4 answers

Ayushi Ayushi 7 years ago

Wellcome

1Thank You

Kartik ? 7 years ago

a written THANK YOU for you

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Ayushi Ayushi 7 years ago

It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle sounding a horn approaches and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession.

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Ayushi Ayushi 7 years ago

The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source.

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What is yield point........

Posted by Říý@ ?? 7 years ago

CBSE > Class 11 > Physics

3 answers

Říý@ ?? 7 years ago

Tnx Yakshi and Prince. ...

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Prince Neeraj 7 years ago

It is the limiting point of elasticity

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Yakshi ? 7 years ago

Actually it is the point which shows limit of elasticity means.....from this point object started to show plastic behaviour.....

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Define Young's modulus of elasticity. ...............

Posted by Říý@ ?? 7 years ago

CBSE > Class 11 > Physics

4 answers

Říý@ ?? 7 years ago

Tnx Yakshi. ...

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Yakshi ? 7 years ago

???

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Ankit Singh 7 years ago

Thanks yakshi ye mera bhi doubt tha

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Yakshi ? 7 years ago

U can say that the ratio of longitudinal stress to longitudinal strain is known as young's modulus (Y) = stress/strain or......(F/A)/(dL/L).......

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Explain the classification according to the elastic properties.

Posted by Uves Saifi 7 years ago

CBSE > Class 11 > Physics

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How to solve : T=½m(g-a) & ma/4=½m(g-a)

Posted by Akanksha Kashyap 7 years ago

CBSE > Class 11 > Physics

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Which chapter is more imp

Posted by Sabeena Ka 7 years ago

CBSE > Class 11 > Physics

6 answers

Akanksha Kumari? 7 years ago

Thermodynamics and Newton "s law

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Nikhil Goyal 7 years ago

Thermodynamic and rotational motion

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Khushi? Rana?? 7 years ago

System of particles and rotational motion

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Khushi? Rana?? 7 years ago

Oscillations and waves

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Khushi? Rana?? 7 years ago

Properties of bulk matter

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Anubhav Kumar 7 years ago

Property of bulk matter

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How many chapters for second terminal examination

Posted by Akshay Pa 7 years ago

CBSE > Class 11 > Physics

2 answers

Ankit Singh 7 years ago

Yes it depend upon your school

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Priya Dharshini ☺☺ 7 years ago

It depends upon ur school

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Kya sch me Ray optics add ho gya hai class 11 me

Posted by Ayush Pandey 7 years ago

CBSE > Class 11 > Physics

4 answers

Ankit Singh 7 years ago

In Chemestrty solid state is also added

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Ishita Ishita 7 years ago

Yes...first 4 chapters have been added....11(a) to 11(d)....

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Priya Dharshini ☺☺ 7 years ago

Yes

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Saba Elias 7 years ago

Yes

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Derivation of pressure exerted by an ideal gas

Posted by Harsh Choudhary 7 years ago

CBSE > Class 11 > Physics

1 answers

Harsh Choudhary 7 years ago

Please help

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WHAT HAPPENS TO THE POTENTIAL ENERGY IF RHE BODY OS TAKEN FROM THE POLE TO THE EQUATOR...............

Posted by Santosh Meher 7 years ago

CBSE > Class 11 > Physics

1 answers

Ayushi Ayushi 7 years ago

When the potential energy is taken from the poles keeping the mass (m) and height (h) constant, then the potential energy will be maximum there. It is because the acceleration due to gravity (g) is the maximum at poles.

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The force of attraction due to a hollow spherical shell of uniform density on a point mass situated inside is zero, so can a body be shielded from gravitational influence? Explain.

Posted by Anurag Mishra 7 years ago

CBSE > Class 11 > Physics

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What is gravitational forcw

Posted by Hina Khan 7 years ago

CBSE > Class 11 > Physics

2 answers

Ayushi Ayushi 7 years ago

The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. In fact, every object, including you, is pulling on every other object in the entire universe! This is called Newton's Universal Law of Gravitation.

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Anurag Mishra 7 years ago

The force of attraction between two masses in universe.

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There's a vertical pole having height 400m and from top of the pole an object is projected with u velocity having an angle of 37 degree and in opposition there is an anoher pole having height 800m and from top of it an object is projected horizontally with 50m/s velocity .We have to find the intersection point and if they not intersect then what distance remain from intersecting ?

Posted by Rohiit Guptaa 7 years ago

CBSE > Class 11 > Physics