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

Swimming in sea water is easier than in fresh water because it has higher buoyancy due to its higher salt content, which makes it easier to float. Additionally, the added resistance in fresh water can tire a swimmer faster.

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Define coefficient of viscosity.

Posted by Anushka Yadav 1 year, 9 months ago

CBSE > Class 11 > Physics

2 answers

Lalit Singh 1 year, 9 months ago

Coefficient of viscosity is a measure of a fluid's resistance to flow. It quantifies the frictional force per unit area that a fluid exerts on an object moving through it or on another layer of fluid in relative motion. The higher the viscosity, the more resistant the fluid is to flow.

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Navish Ahmed 1 year, 9 months ago

Viscosity is a measure of resistance to flow of liquids. This arises due to internal friction between layers of fluids as they slip past one another while liquid flows. Coefficient of Viscosity

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What is stream line flow

Posted by Vipin Siwach 1 year, 9 months ago

CBSE > Class 11 > Physics

3 answers

Neelam Verma 1 year, 9 months ago

Streamline flow is the flow of fluid where each particle follows the path of it's proceeding particle. The velocity of each particle at a point is same

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Lalit Singh 1 year, 9 months ago

Streamline flow is a type of fluid flow in which the fluid moves in continuous, smooth paths, without turbulence or mixing of fluid layers. Streamlines are lines that are everywhere tangent to the flow velocity vector, and they represent the path that a massless particle would follow as it moves with the fluid. Streamline flow occurs when the fluid velocity is constant in a given direction and is not affected by pressure gradients or friction.

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Navish Ahmed 1 year, 9 months ago

Streamline flow in fluids is defined as the flow in which the fluids flow in parallel layers such that there is no disruption or intermixing of the layers and at a given point, the velocity of each fluid particle passing by remains constant with time.

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Defrenatate heat and temperature

Posted by Minz Pretty 1 year, 9 months ago

CBSE > Class 11 > Physics

2 answers

Deepak Handi 1 year, 9 months ago

Heat is energy source temperature is measurement of heat

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Prince Kundu 1 year, 9 months ago

Heat is the total energy of the motion of the molecules of the substance whereas temprature refer to the measure of the avarage energy of motion of the molecules in the substance

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14 State Hooke's law. Deduce expression for Young's modulus of material of a wire of length 7. radius of cross-section "r loaded with a body of mass M producing an extension Al in it.

Posted by Misba Shaikh 1 year, 9 months ago

CBSE > Class 11 > Physics

2 answers

Priti Satnami 1 year, 9 months ago

Thanks

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Shanika Sharma 1 year, 9 months ago

Hooke law: It states that the stress is directly proportional to strain. Stress directly proportional strain Stress=E Strain E= stress/strain

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Pathaan movie kal kon kon dekhne ja rha hai

Posted by Pankaj Chahar 1 year, 9 months ago

CBSE > Class 11 > Physics

1 answers

Daksh Dhawan 1 year, 9 months ago

Koi nhi

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https://www.teachmint.com/tfile/studymaterial/b-com/Physics/WorkEnergyPowerNotepdf/8b1c2646-906f-4c0d-9b99-0eb17c32eb6d?utm_source=tfile_share any one will be doubte on cbse guide notes please check on this link

Posted by Prince Kumar😁😁 1 year, 9 months ago

CBSE > Class 11 > Physics

0 answers

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Is temperature a macroscopic or microscopic concept?

Posted by Shabd Sarthak 1 year, 9 months ago

CBSE > Class 11 > Physics

2 answers

10C 13 Niranjaan S.M 1 year, 9 months ago

Macroscopic

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Piyush Sharma 1 year, 9 months ago

Macroscopic

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State Bernoulli's theorem

Posted by Sharandeep Kaur 1 year, 10 months ago

CBSE > Class 11 > Physics

3 answers

10C 13 Niranjaan S.M 1 year, 9 months ago

Simply the sum of all pressure energy, potential energy and kinetic energy in a streamlined flow is constant in initial and final points

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Shanika Sharma 1 year, 10 months ago

It states that the sum of pressure energy, kinetic energy and potential energy per unit mass is always constant for an ideal fluid having stream line flow.

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Krishna Achu 1 year, 10 months ago

If an ideal liquid is flowing in streamlined flow, the total energy i.e., sum of pressure, kinetic energy & potential energy per unit volume of liquid remains constant at every cross section of the tube.

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ANSWER

Why does the pressure increases when the temperature of a gas increases

Posted by Shanika Sharma 1 year, 10 months ago

CBSE > Class 11 > Physics

3 answers

Pankaj Chahar 1 year, 9 months ago

Where r u from

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Pankaj Chahar 1 year, 9 months ago

Hii

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Krishna Achu 1 year, 10 months ago

The gas particles are loosely packed. When the temperature of the container increases, the kinetic energy of the gas molecule becomes high. This means the collision rate of the particles increases. Due to the collision of gas particles, the pressure increases across the wall of the container.

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Don't open up as my background for the tv January what are you

Posted by Naresh Muhanda 1 year, 10 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Why stokes law can't be determined experimentally

Posted by Ananya Verma 1 year, 10 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find the acceleration of the moon with respect to the earth from the following data: Distance between the earth and the moon = 3.85 x 10 km and the time taken by the moon to complete one revolution around the earth = 27-3 days.

Posted by Ayush Yadav 1 year, 10 months ago

CBSE > Class 11 > Physics

1 answers

Preeti Dabral 1 year, 10 months ago

This is the acceleration of moon with respect to Earth

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A 5m aluminium wire ( 7=7×10^10N/m^2) of diameter 3mm support 40kgmass in order to have the same elongation in a copper wire (7=12×10^10N/m^2) of the same length under the same weight the diameter should be in (mm)

Posted by Shivani Maurya 1 year, 10 months ago

CBSE > Class 11 > Physics

2 answers

Preeti Dabral 1 year, 10 months ago

2.3

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Mobassir Shaikh 1 year, 10 months ago

Hii

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The distance between the centres of carbon and oxygen atoms in the carbon monoxide gas molecule is 1.13 A°. Locate the centre of mass of the gas molecule related to carbon atom

Posted by Tanvee Soni 1 year, 10 months ago

CBSE > Class 11 > Physics

1 answers

Pankaj Chahar 1 year, 9 months ago

Nhi pta bese kaha se ho tum

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ANSWER

Young's moduli experiments

Posted by Praveen Prem 1 year, 10 months ago

CBSE > Class 11 > Physics

1 answers

Preeti Dabral 1 year, 10 months ago

Young's modulus is given by the gradient of the line in a stress-strain plot. In the experiment in the video above, we measured the Young's modulus of some copper wire which does not extend very much. So a fiducial marker such as some tape can be used to help identify the original and extended lengths.

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State and prove pascal's law

Posted by Heer Maheshwari 1 year, 10 months ago

CBSE > Class 11 > Physics

2 answers

Sharandeep Kaur 1 year, 10 months ago

If the effect pf gravity is neglected then pressure is same at all points of the liquid (at rest) Pt=h ro g+Pa SI unit = N/m² or Pa Cgs = dyne/cm² Liquid at rest F1 = F2 P1 A = P2 A P1=P2 Pascal laa and effect of gravity Liquid is at equilibrium of rest F1 + mg = F2 mg= F2-F1 Mg= P2 A - P1A Mg = ( P2-P1)A Mg/A = P2-P1 h ro g = P2-P1 If g= 0 P2-P1=0 P1= P2

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Sursingh Waskale 1 year, 10 months ago

Hello

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Abody moves from point A-B under the action of a force varrying in magnitude as shown obtain the work done

Posted by Sreya Nk 1 year, 10 months ago

CBSE > Class 11 > Physics

1 answers

Harini Mp 1 year, 9 months ago

Work done=Area enclosed from A to B =Area enclosed from A to L(Since area from L to M and M to B are equal and opposite polarity) =10×2+21×1.5 =20+2.5=22.5J

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ANSWER

Two wires

Posted by Rakshit Jain 1 year, 10 months ago

CBSE > Class 11 > Physics

1 answers

Preeti Dabral 1 year, 10 months ago

complete your question.

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50 gram of steam at 100 degree celsius is passed into an insulated container containing 50 gram of ice at minus 5 degree Celsius and 50 gram of water at 60 degree celsius is mixed with it find the equilibrium temperature and decomposition of the mixture

Posted by A J 1 year, 10 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

The colour of blackbody is necessary to be black or not. Why?

Posted by Pari Mavi 1 year, 10 months ago

CBSE > Class 11 > Physics

1 answers

Preeti Dabral 1 year, 10 months ago

No, it is not necessary that all black coloured object should be considered as black bodies. For example , if we take a black surface which is highly polished, it will not behave as a perfect black body .

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The colour of blackbody is necessary to be black or not?

Posted by Pari Mavi 1 year, 10 months ago

CBSE > Class 11 > Physics

3 answers

Preeti Dabral 1 year, 10 months ago

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Inzmam Butt 1 year, 10 months ago

Thnks

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Surya Pratap Singh 1 year, 10 months ago

Colour doesnt depend sun is a black body To be a black body a thing should be good emitter as well as good absorber

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On heating a conductor electron gets excited and they start to move then why current does not produce while the electron moving?

Posted by Pari Mavi 1 year, 10 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Why Stefan's law is also known as Stefan's Boltzmann Law?

Posted by Pari Mavi 1 year, 10 months ago

CBSE > Class 11 > Physics

1 answers

Preeti Dabral 1 year, 10 months ago

The Stefan–Boltzmann law, also known as Stefan's law, states that the total energy radiated per. unit surface area of a black body in unit time (known variously as the black-body irradiance, energy flux density, radiant flux, or the emissive power), j*, is directly proportional to the fourth.

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What is dimensions of density

Posted by Prasad Rathod 1 year, 11 months ago

CBSE > Class 11 > Physics