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Which has more moment of inertia simple egg or boiled egg?
Posted by Balwant Pratap (Nov 20, 2017 9:46 p.m.) (Question ID: 87351)

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How much time it took for the Universe to form?
Posted by Abhishek Dubey (Nov 20, 2017 9:36 p.m.) (Question ID: 87336)

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Explain the uses of dimensional analysis?
Posted by Kuldeep Choudhary (Nov 20, 2017 8:39 p.m.) (Question ID: 87216)

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  • To relate one equation to other
    Answered by Ashish Soni (Nov 20, 2017 9:55 p.m.)
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  • Convert one system of units into another 😁
    Answered by Manjeet Singh (Nov 20, 2017 9:46 p.m.)
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  • And to build new equation
    Answered by Rohan Naik (Nov 20, 2017 8:44 p.m.)
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  • To check the correctness of an equation
    Answered by Rohan Naik (Nov 20, 2017 8:44 p.m.)
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Moment of inertia
Posted by Ns S (Nov 20, 2017 7:40 p.m.) (Question ID: 87086)

  • Molar mass of co2
    Posted by Bharti Basnett (Nov 20, 2017 7:49 p.m.)
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  • Inertia of rotational bodies 😁😀
    Answered by Manjeet Singh (Nov 20, 2017 9:50 p.m.)
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4 particles each f mass m move along a circle of radius r under the action of their mutual gravitational attraction . find the speed of each particle
Posted by Gaytri Ambilkar (Nov 20, 2017 7:15 p.m.) (Question ID: 87013)

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What is the graph between 'v' and 'u' satisfying the equation 1/v +1/u = 1/f.
Posted by Aman Jha (Nov 20, 2017 7:14 p.m.) (Question ID: 87010)

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Wite the dimension of a×b from;E=(b-x²)/ab where E=energy and x is the distance.
Posted by Laxman Chetri (Nov 20, 2017 7:05 p.m.) (Question ID: 86993)

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4 particals each of mass m move along a circle of radius r under the action of their mutual gravitational attraction .find the speed of each particle
Posted by Gaytri Ambilkar (Nov 20, 2017 7:03 p.m.) (Question ID: 86990)

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Write the dimension of a/b from relation; F= a√x +bt²
Posted by Laxman Chetri (Nov 20, 2017 7:02 p.m.) (Question ID: 86989)

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If two bodies colloid with one was initially at rest, is it possible for anyone to be at rest after collision?
Posted by Waahi Khan (Nov 20, 2017 6:44 p.m.) (Question ID: 86958)

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  • Yes if two identical ball collide to each other in frictionless surface among ehich one is in rest and other one is moving with velocity v collisions takes place after collisions their state changes among them selves (body which was at rest start moving with velocity v and ball which was moving comes to rest.
    Answered by As K (Nov 21, 2017 12:01 a.m.)
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What is component of force
Posted by Prabhsharan Singh (Nov 20, 2017 6:21 p.m.) (Question ID: 86913)

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  • Mass and acceleration
    Answered by Sushil Kumar (Nov 20, 2017 7:01 p.m.)
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A particle executes circular motion on a horizontal smooth table with the help of a string if the string is cut suddenly does its angular momentum change
Posted by Shivi Gupta (Nov 20, 2017 5:52 p.m.) (Question ID: 86874)

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  • Yes shivi 😁😀😂
    Answered by Manjeet Singh (Nov 20, 2017 9:57 p.m.)
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State and explain Bernoulli's theorm
Posted by Kavita Nain (Nov 20, 2017 4:49 p.m.) (Question ID: 86819)

  • Kavita if you liked answer then please comment
    Posted by Manjeet Singh (Nov 20, 2017 10 p.m.)
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  • With increase in speed of liquid decrease in pressure of liquid
    Answered by Manjeet Singh (Nov 20, 2017 9:59 p.m.)
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  • Bernoulli’s theorem states that whenever there is an increase in the speed of the liquid, there is a simultaneous decrease in the potential energy of the fluid .There is a decrease in the pressure of the fluid.

    Basically, it is a principle of conservation of energy in the case of ideal fluids. If the fluid flows horizontally such that there is no change in the gravitational potential energy of the fluid then increase in velocity of the fluid results in a decrease in pressure of the fluid and vice versa.

    Answered by Amar Kumar (Nov 20, 2017 5:22 p.m.)
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Explanation of dynamic lift
Posted by Satyam Kushwaha (Nov 20, 2017 1:21 p.m.) (Question ID: 86715)

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Would it be possible to complete class 11th physics book vol.1 in 2 days?
Posted by Yash Tiwari (Nov 20, 2017 11:30 a.m.) (Question ID: 86684)

  • Kabhi try nahi kiya bro
    Posted by Manjeet Singh (Nov 21, 2017 6:57 a.m.)
  • Yes I have done this before
    Posted by Arihant Yadav (Nov 20, 2017 4:10 p.m.)
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Shape of water drop is spherical.why?
Posted by Divyansh Rajoriya (Nov 20, 2017 9:52 a.m.) (Question ID: 86657)

  • Bcz of surface tension every liquid tends to have least surface area and sphere has least surface area .
    Posted by Arihant Yadav (Nov 20, 2017 4:11 p.m.)
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  • Because of surface tension and cohensive force 😉😁😂
    Answered by Manjeet Singh (Nov 21, 2017 6:59 a.m.)
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  • The shape of water drop is spherical because water drop always tend to acquire minimum surface area due to to surface tension where the droplets of water are pulled into a spherical shape by the cohesive forces of the surface layer. 

    Answered by Moumita Mukherjee (Nov 20, 2017 10:08 a.m.)
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What is retro reflecting panel??
Posted by Rik Sarkar (Nov 20, 2017 7:45 a.m.) (Question ID: 86620)

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What about the footprints of Neil arm strong on moon ,are they present as fresh yet now?
Posted by Dinesh Kumar (Nov 19, 2017 11:54 p.m.) (Question ID: 86518)

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  • Yes as there is no change I'm environmental conditions
    Answered by Manjeet Singh (Nov 20, 2017 7:02 a.m.)
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  • Yes niel armstrong's footprint is present on moon because moon have no atmosphere it is a dead heavenly body. No climate change take place there.
    Answered by As K (Nov 20, 2017 5:55 a.m.)
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How can we reduce the gauge pressure
Posted by Jai Jai (Nov 19, 2017 11:28 p.m.) (Question ID: 86511)

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What is the direction of areal velocity of the earth around the earth
Posted by Vivek Verma (Nov 19, 2017 11:24 p.m.) (Question ID: 86509)

  • Not all Venus is an exception
    Posted by Arihant Yadav (Nov 20, 2017 4:13 p.m.)
  • All planet revolve around sun in anticlockwise direction.
    Posted by As K (Nov 20, 2017 6 a.m.)
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  • Anticlockwise 😀😊😂
    Answered by Manjeet Singh (Nov 20, 2017 7:03 a.m.)
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  • In anti clockwise direction. sun is lacated at centre of all planets orbit and they revolve around sun in anticlockwise direction.
    Answered by As K (Nov 20, 2017 6:03 a.m.)
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  • Areal velocity of Earth always around the sun because the Kepler's law is tell about it:-the planet areal velocity is always around the ☀️,(always taken as a radius which is constant with respect to origin
    Answered by Ankit Dixit (Nov 20, 2017 1:25 a.m.)
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Why we can not reach the speed of light
Posted by Surya Saini (Nov 19, 2017 11:22 p.m.) (Question ID: 86508)

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  • As objects travel faster and faster, they get heavier and heavier , the heavier they get, the harder it is to achieve acceleration, so you never get to the speed of light. A photon actually has no mass .If it had mass, it couldn't travel at the speed of light.

    Particles that have mass require energy to accelerate them. The closer to the speed of light you get a particle, the more energy is required to go faster. This is because the particles themselves get more massive in proportion to the increased velocity.

    Answered by Amar Kumar (Nov 20, 2017 12:10 a.m.)
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Define gravitation ?
Posted by Arnav Singh (Nov 19, 2017 9:53 p.m.) (Question ID: 86449)

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  • The force of attraction between 2 bodies having masses
    Answered by Manjeet Singh (Nov 20, 2017 7:05 a.m.)
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  • Gravitation is the force of attraction between object and Earth.
    Answered by Ankit Dixit (Nov 20, 2017 1:28 a.m.)
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  • Everybody in univers attract the other body by force which is directly proportional to the product of their masses and inversely proportional to the square of distance between them. G=F×r×r/m1×m2
    Answered by K D (Nov 19, 2017 10:20 p.m.)
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  • It is the property of objects by virtue of which two massive objects attract each other.
    Answered by Pulakita Sharma (Nov 19, 2017 10:02 p.m.)
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Value of G
Posted by Sagar Jaiswal (Nov 19, 2017 9:47 p.m.) (Question ID: 86446)

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  •  

    6.67 x 10 -11 newton meters squared per kilogram squared (Nm 2kg -2 )

    Answered by Amar Kumar (Nov 19, 2017 9:52 p.m.)
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What is principle of moment?
Posted by Himanshi Verma (Nov 19, 2017 8:54 p.m.) (Question ID: 86377)

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  • The product of load arm and load is equal to the product of effort arm and effort
    Answered by Himanshi Singh (Nov 20, 2017 10:15 p.m.)
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Youngs modulus
Posted by Nishant Chauhan (Nov 19, 2017 8:52 p.m.) (Question ID: 86372)

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  • It is the ratio of tensile strees and longitudinal strain y= mg ×l/πr^2×∆l
    Answered by Pulakita Sharma (Nov 19, 2017 10:05 p.m.)
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  • It state that normal stress to longitudinal strain
    Answered by Nishant Chauhan (Nov 19, 2017 8:53 p.m.)
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why are tyres are made up of rubber
Posted by Bharti Kashyap (Nov 19, 2017 8:48 p.m.) (Question ID: 86362)

  • Why train tyres are made by strong metal like iron
    Posted by As K (Nov 20, 2017 6:10 a.m.)
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  • To increase friction
    Answered by Manjeet Singh (Nov 20, 2017 7:27 a.m.)
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  • Because to get it expand during heavy loads
    Answered by Sanoj S Nair (Nov 19, 2017 9:17 p.m.)
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How does the free surface of liquid at rest behaves
Posted by Deepak Kumar (Nov 19, 2017 7:26 p.m.) (Question ID: 86213)

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  • Intramolecular movement
    Answered by Manjeet Singh (Nov 19, 2017 8:46 p.m.)
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can anyone provide me tricks for writing a derivation so that i can score full marks and the teacher doesnt get a chance for deducing marks.....
Posted by Animesh Narayan (Nov 19, 2017 6:59 p.m.) (Question ID: 86162)

  • Agar koi bhi trick milti hai to mujhe bhi bata diyo
    Posted by Himanshi Singh (Nov 19, 2017 7:10 p.m.)
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  • Bhaiya derivation nahi uske figure aur concept Ko samjho
    Answered by Manjeet Singh (Nov 19, 2017 8:49 p.m.)
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Why length,time and velocity cannot be set in fundamental quantity?
Posted by Harsh Sharma (Nov 19, 2017 6:19 p.m.) (Question ID: 86076)

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  • Because they are derived units
    Answered by Manjeet Singh (Nov 19, 2017 8:51 p.m.)
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  • Because they are derived from others We can't derive any unit from it Length is a fundamental quantity
    Answered by Himanshi Singh (Nov 19, 2017 6:31 p.m.)
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The velocity of a projectile is given by u= 5i +10j find: 1. Time of flight 2. Maximum height 3. Range
Posted by M K Kulariya (Nov 19, 2017 5:58 p.m.) (Question ID: 86060)

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