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Show that angle of repose is equal to the of friction

Posted by Shravan Thakur 7 years ago

CBSE > Class 11 > Physics

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Whaat is venturimetet

Posted by Arihant Jain 7 years ago

CBSE > Class 11 > Physics

1 answers

???. Pragati 7 years ago

A venturimeter is a device used to measure the fluid flow through pipes. This flow measurement device is based on the principle of Bernoulli’s equation. Inside the pipe , pressure difference is created by reducing the cross-sectional area of the flow passage

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Derive the bernoleg theorem

Posted by Anita Bajwa 7 years ago

CBSE > Class 11 > Physics

1 answers

Harsh Mishra 7 years ago

It is Bernoulli's Theorem, RIGHT!!!! theorem noun Definition of Bernoulli's theorem 1 [ after Jacques Bernoulli ] : a basic principle of statistics: as the number of independent trials of an event of theoretical probability p is indefinitely increased, the observed ratio of actual occurrences of the event to total trials approaches p as a limit . 2. [ after Daniel Bernoulli ] : a law of hydrodynamics: in a stream of liquid the sum of the elevation head, the pressure head, and the velocity head remains constant along any line of flow provided no work is done by or upon the liquid in the course of its flow and decreases in proportion to the energy lost in viscous flow

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Iskdbdbnd

Posted by Saini Saab 7 years ago

CBSE > Class 11 > Physics

5 answers

Simran Sian 7 years ago

What is this??

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Ankit Singh 7 years ago

???? What is this

2Thank You

Ashwani Dhanoa 7 years ago

What's this?????

1Thank You

Yakshi ? 7 years ago

R u alright????????

4Thank You

???. Pragati 7 years ago

1Thank You

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If 4m is the speed and total time is 5s then distance is

Posted by Pramod Das 7 years ago

CBSE > Class 11 > Physics

4 answers

Golu Chaudhary 7 years ago

20 m

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Yakshi ? 7 years ago

Yes....it will be 20 because there is not any extra condition

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Ayushi Ayushi 7 years ago

If 4 m/s is the speed and time is 5s then distance is 20 m.

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Taranjeet Singh 7 years ago

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Liquid is filled in a long cylindrical vessel upto a specific level. On heating, liquid level does not change. How is that possible?

Posted by Devinandana R K 7 years ago

CBSE > Class 11 > Physics

1 answers

Yakshi ? 7 years ago

It changes but in very less amount and we can't see it with naked eyes .....

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What is the density of waterat a depth where pressure is 80atm, given that its dansity at the sarface is 1.03×103kgm^-3

Posted by Shaym Babu Yadav 7 years ago

CBSE > Class 11 > Physics

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2nd law is real law

Posted by Chetan Rathore 7 years ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 7 years ago

Proof. When we can show that Newton’s first and third law are contained in the second law, then we can say that it is the real law of motion.
(i) First law is contained in second law: According to Newton’s second law of motion,

It means that there will be no acceleration in the body if no external force is applied. This represents that a body at rest will remain at rest and a body in uniform motion will continue to move along the same straight line in the absence of an external force. This corresponds to Newton’s first law of motion. So, first law of motion is contained in Second law of motion

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0.15g of ice at 0°c is mixed with 0.3kg water. At 50°c the resulting temperature is 6.7°c . Calculate the heat of ice.

Posted by Ankit Singh 7 years ago

CBSE > Class 11 > Physics

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A mass of 6 kg is suspended by a rope of length 2 m from the ceiling. A force of 50 N in the horizontal direction is applied at the mid point P of the rope,as shown.what is the angle the rope makes with the vertical in equilibrium ? Take g=10m/s2.Neglect the mass of rope.

Posted by Anku Chauhan 7 years ago

CBSE > Class 11 > Physics

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Any one from saharsa please tell me

Posted by Rounak Singh Rajput 7 years ago

CBSE > Class 11 > Physics

4 answers

James Johnn 7 years ago

Yeah_i am from saharsa So__what:)

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Rounak Singh Rajput 7 years ago

aditi tum saharsa sa ho kiya

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Aditi _Chouhan_ 7 years ago

???

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Rounak Singh Rajput 7 years ago

or agar patori panchgachiya ka v koi hoga to bolna

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A 10 g bullet is fired with a velocity of 300 m/s into a pendulum bob which has a mass of 990 .How high does the pendulum bob(plus bullet)swing after the collision?

Posted by Salman Ansari 5 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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What is the angle between the vector AxB and BxA

Posted by Taiba Khan 7 years ago

CBSE > Class 11 > Physics

1 answers

Ayushi Ayushi 7 years ago

Since they're in opposite directions, the angle between them is 180 degrees. 180° or 0° depending on how you'd like to define the angle between two vectors. Because a×b=-b×a, the two vectors are anti-parallel, both along the same axis but pointing in opposite directions. The other answers are correct in saying that…

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विमीय सूत्र क्या है

Posted by Sonu Kumar 7 years ago

CBSE > Class 11 > Physics

4 answers

Ankit Singh 7 years ago

Ook !!! Its dimension formula..

1Thank You

Ayushi Ayushi 7 years ago

Question - What is dimensional formula? Answer - The dimensional formula is defined as the expression of the physical quantity in terms of its basic unit with proper dimensions. For example, dimensional force is. F = [M L T-2] It's because the unit of Force is Netwon or kg*m/s2

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Ankit Singh 7 years ago

U are right yakshi mujhe bhi kuch samaj nahi aaya

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Yakshi ? 7 years ago

WOW!!!!kuchh samaj nai aaya?

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Define Terminal velocity !!! ____???___

Posted by Alia Khan ❤?❤ 7 years ago

CBSE > Class 11 > Physics

3 answers

Priya Dharshini ☺☺ 7 years ago

Wlcm friend

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Alia Khan ❤?❤ 7 years ago

Thankx priya ??

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Priya Dharshini ☺☺ 7 years ago

Terminal velocity -the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.

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Stokes' law ✌✌✌

Posted by Alia Khan ❤?❤ 7 years ago

CBSE > Class 11 > Physics

2 answers

Ashwani Dhanoa 7 years ago

an expression describing the resisting force on a particle moving through a viscous fluid and showing that a maximum velocity is reached in such cases, e.g. for an object falling under gravity through a fluid.

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Priya Dharshini ☺☺ 7 years ago

the force required to move a sphere through a given viscous fluid at a low uniform velocity is directly proportional to the velocity and radius of the sphere

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Derviation of bernouli's theorm

Posted by Nikhil Sharma Uff Fauji Pandat???? 7 years ago

CBSE > Class 11 > Physics

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When a object moving straight what is acceleration and velocity

Posted by Taiba Khan 7 years ago

CBSE > Class 11 > Physics

1 answers

Ayushi Ayushi 7 years ago

The acceleration would be zero because acceleration is defined as the change in an object’s velocity over a period of time. Velocity is a vector, which means it has a magnitude and direction. Speed is a scalar quantity, which means it only has a magnitude. Therefore if an object has a constant speed in a direction during a set period of time, meaning it has a constant velocity, there will be no acceleration.

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Describe stress vs strain graph for a metal wire and hence explain the terms, elastic limit,yelid point, breaking stress.

Posted by Suman Kumar 7 years ago

CBSE > Class 11 > Physics

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Derive the expression of gravitational potential at a distance r from the centre of earth.

Posted by Suman Kumar 7 years ago

CBSE > Class 11 > Physics

1 answers

Taiba Khan 7 years ago

When a object moving straight what is acceleration and velocity

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Show that surface energy is numerically equal to the surface tension.

Posted by Suman Kumar 7 years ago

CBSE > Class 11 > Physics

1 answers

Ayushi Ayushi 7 years ago

Surface tension of the liquid=Force/length multiply length to both numerator and the denominator =Force x length/length x length =work/area So, this show that the surface energy per unit area is equal to the surface tension of the liquid.

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What happens to time period of Earth if its volume reduce 1/27?

Posted by Ansum Patel 7 years ago

CBSE > Class 11 > Physics

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Can I get explaination of practicals

Posted by Roshan Puthige 7 years ago

CBSE > Class 11 > Physics

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List the two condition itential for using distillation as a method for separation for components from a mixture

Posted by Aman Singh 7 years ago

CBSE > Class 11 > Physics

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Explain Bernoullies' theorem?

Posted by Alia Khan ❤?❤ 7 years ago

CBSE > Class 11 > Physics

2 answers

Dharna Saini 7 years ago

It states that if the volume decreasea pressure increases . volume is inversely praportional to pressure

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???. Pragati 7 years ago

Bernoulli's principle states that an increase in the velocity(v) of a fluid occurs simultaneously with a decrease in pressure(p) or a decrease in the fluid’s potential energy(gz) (where g=acceleration due to gravity,(z)or(h)=height ”. “Bernoulli's principle states that as a fluid moves around an object it creates different pressures on that object”. When the velocity of fluid is more the pressure tends to be less and the vice versa as we know pressure and velocity are inversely proportional.

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Derive stocks law by dimensional analysis

Posted by Manimozhi M 7 years ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 7 years ago

Dimensional analysis proof of Stokes' Law
Suppose that the sphere has radius r and falls through a fluid of viscosity η. Let the terminal velocity be v .

We can calculate the viscous drag F on the sphere by dimensional analysis.

If F = kr^xη^yv^z

We have MLT^-2 = Lx(ML^-1T^-1)y(LT^{- 1})^z

Solving this gives x = 1, y = 1 and z = 1.

By other methods k can be shown to be 6π.
F = 6πηrv

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A heat flux of 4000 j/s is to be passed through a copper rod of length 10 cm and area pf cross section 100 cm2. The thermal conductivity of copper is 400 W/m°c. The two ends of this rod must be kept at a temperature difference of?

Posted by Saba Elias 7 years ago

CBSE > Class 11 > Physics

0 answers

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Why the heat engine efficiency is not 100%?

Posted by Aditi Priya 7 years ago

CBSE > Class 11 > Physics

2 answers

Harsh Mishra 7 years ago

It is ? all because of second law of thermodynamics!!!!!! It puts a fundamental limit on the thermal efficiency of all heat engines. Even an ideal, frictionless engine can't convert anywhere near 100% of its input heat into work. That's all, may be this will help you.?

1Thank You

Priyanka Mish 7 years ago

it is but only in ideal heat engine

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Effect of shape of earth

Posted by Sanjeev Chauhan 7 years ago

CBSE > Class 11 > Physics

1 answers

Naman Jain 7 years ago

Shape of earth is not a part perfect sphere . so, equator radius is large in size as compared to pole radius . so gravitation at pole is high because less radius and equator have low gravition force because of high radius . so this is effect of shape of earth

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any girl name surbhi verma jiska no 99 sa start hota h

Posted by Rounak Singh Rajput 5 years, 8 months ago

CBSE > Class 11 > Physics