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  • 2 answers

Ripu Singh 7 years, 2 months ago

Rolling Friction : It is caused by rolling motion of an object, less energy is dissipated to overcome rolling friction as only one point of object is contacts the surface. Magnitude of rolling friction is less than sliding friction.

Mohd Zaid 7 years, 2 months ago

sliding friction causes from sliding of a body as example - ice skating where rolling friction causes from rolling of a body as example - rollar skates
  • 2 answers

Sandeep Yadav 7 years, 2 months ago

Two physical systems are in thermal equilibrium if there is no net flow of thermal energy between them when they are connected by a path permeable to heat. Thermal equilibrium obeys the zeroth law of thermodynamics

Gaurav Seth 7 years, 2 months ago

Thermal Equilibrium

  • Two systems are said to be in thermal equilibrium if the temperatures of the two systems are equal. 
  • In mechanics if the net force on a system is zero, the system is in equilibrium.  
  • In Thermodynamics equilibrium means all the macroscopic variables (pressure, temperature and volume) don’t change with time. They are constant throughout.

For Example: -

  • Consider two bodies at different temperatures one is at 300C and another at 600C then the heat will flow from body at higher temperature to the body at lower temperature.
  • Heat will flow till both bodies acquire same temperature.
  • This state when there is no heat flow between two bodies when they acquire the same temperature is known as thermal equilibrium.
  • 4 answers

Priya Dharshini ? 7 years, 2 months ago

Yes it is there

@@Ditya ®°@Thore????? 7 years, 2 months ago

Ya

Littleshine Aaaru?? 7 years, 2 months ago

Yes

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

yes it's in the syllabus.
  • 3 answers

Itss Me Jippo 7 years, 2 months ago

What's your question??

Ankit Singh 7 years, 2 months ago

What is this

Aman Kumar 7 years, 2 months ago

Ye kya hai..
  • 4 answers

Ankit Singh 7 years, 2 months ago

Your welcome aaru

Littleshine Aaaru?? 7 years, 2 months ago

thankssss

Ankit Singh 7 years, 2 months ago

Hope this will help u

Ankit Singh 7 years, 2 months ago

Projectile motion is a form of motion experienced by an object or particle that is thrown near the Earth's surface and moves along a curved path under the action of gravity only. This curved path was shown by Galileo to be a parabolaA projectile is an object upon which the only force is gravity. Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.
  • 7 answers

Lily ☺ 7 years, 2 months ago

My favourite chapter is system of particles. Sure i 'll help u.

Yakshi ? 7 years, 2 months ago

???

Nishita Tomar 7 years, 2 months ago

but he is not ready to get help ?

Ankit Singh 7 years, 2 months ago

My favourite chapter is work power energy and gravitatio. Yes i am ready to help

Yakshi ? 7 years, 2 months ago

Gravitation.....and oscillation

Littleshine Aaaru?? 7 years, 2 months ago

Thanka

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

my fav chap is laws of motion nd work nd energy... yup I ready to help you. ✌️ ☺️
  • 3 answers

Aman Kumar 7 years, 2 months ago

Hello

Ankit Singh 7 years, 2 months ago

Hi aman

Aman Kumar 7 years, 2 months ago

Ampere(A)??
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  • 5 answers

Yakshi ? 7 years, 2 months ago

Thanq so.....much priya....???

Priya Dharshini ? 7 years, 2 months ago

Eg for adhesive force- there is large force between paper molecules and gum molecules. Adhesive force is between different molecules force and cohesive is exerted my same two molecules to each other

Yakshi ? 7 years, 2 months ago

Aman can u give me best example.....

Aman Kumar 7 years, 2 months ago

Adhesive force is a type of force that acts between the particles of different substances......Cohesive force is a type of force that acts between same type of particles....

Nishita Tomar 7 years, 2 months ago

adhesive force:- force of attraction acting b/w the molecules of different substances. cohesive force:- force of attraction amongst the molecules of the same substance.
  • 2 answers

Ankul Bhadana 7 years, 2 months ago

In the periodic motion body motion repeats after a definite ti.e if interval but in a oscillatory motion body moves back and forth repeatedly after a definite time of interval

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

Periodic Motion ➡️ A motion which repeat itself over nd over again after a regular interval of time. On the other hand.. Oscillation motion ➡️A motion in which body moves back nd fourth repeatedly about a fixed point.
  • 1 answers

Lily ☺ 7 years, 2 months ago

1gram per cubic centimeter
  • 4 answers

♥️Bhavika Naik?? 7 years, 2 months ago

Hanna...aur 2 ch badh gaye padhne ke

Yakshi ? 7 years, 2 months ago

Arey haa bhai.......???

Ankit Singh 7 years, 2 months ago

Yes fend both chapter s are removed

Aman Kumar 7 years, 2 months ago

Yes frnd, both chapters is removed ...✌
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Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

✴️Elastic behaviour of solids ✴️ Stress and strain ✴️ Hooke’s law ✴️ Young’s modulus, bulk modulus, shear modulus of rigidity ✴️ Poisson's Ratio, Elastic Energy... that's it.
  • 3 answers

Ankit Singh 7 years, 2 months ago

Mujhe to nahi lagta yakshi

Yakshi ? 7 years, 2 months ago

Well.....are u alright!!??????????

Mitanshu Chadha 7 years, 2 months ago

Laufjgmxlurayrojfaikdnvzuprtfffffffgggggyyytreddfggjjts nyssqdghk
  • 1 answers

Ankit Singh 7 years, 2 months ago

The work-energy theorem states that the work done by all forces acting on a particle equals the change in the particle's kinetic energy. Now for infinitesimal displacement calculations and forces whether variable or constant, we can write from the definition of work, dW=Fdx Now let the total work done is W, and the displacement is fromx0tox Integrating the both sides we get, ∫0WdW=∫x0xFdx W=∫x0xFdx W=m∫x0xdvdtdx W=m∫v0vvdv W=12mv2−12mv20 W=ΔEk (Proved) Hence this will help u
  • 6 answers

Ankit Singh 7 years, 2 months ago

???

Ankit Singh 7 years, 2 months ago

I think so that its mars

Yakshi ? 7 years, 2 months ago

Kaun si duniya mai hai aap?????yeh 2019 chal raha hai......aap earth pr hai.. .. ......pta hai??????????

Ankit Singh 7 years, 2 months ago

Its 11 ??

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

it's 11th ???

D J 7 years, 2 months ago

class 12 ka derivations ? ??
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  • 1 answers

Yogita Ingle 7 years, 2 months ago

  • For a streamline fluid flow, the sum of the pressure (P), the kinetic energy per unit volume (ρv2/2) and the potential energy per unit volume (ρgh) remain constant.
  • Mathematically:- P+ ρv2/2 + ρgh = constant
    • where P= pressure ,
    • E./ Volume=1/2mv2/V = 1/2v2(m/V) = 1/2ρv2
    • E./Volume = mgh/V = (m/V)gh = ρgh
  • 6 answers

Ankit Singh 7 years, 2 months ago

Aacha ??ok yakshi

Yakshi ? 7 years, 2 months ago

Nai.....mainey 10th class ke acc. Btaya tah

Ankit Singh 7 years, 2 months ago

U have complete optics yakshi

Ankit Singh 7 years, 2 months ago

Yes me bhi

Aman Kumar 7 years, 2 months ago

Mai help jarur karta but I had not started optics yet

Yakshi ? 7 years, 2 months ago

Radius toh focal length ki double hoti hai naah.......??? toh shaayad se iska answer 100cm ho ......meri physics kuchh zyaada e weak hai???
  • 3 answers

Yakshi ? 7 years, 2 months ago

????

Ankit Singh 7 years, 2 months ago

Here ???????

???. Pragati 7 years, 2 months ago

Here???????¿...
  • 1 answers

Ankit Singh 7 years, 2 months ago

Let a projectile be thrown up with a velocity u at angle angle w. Velocity of projectile along the horizontal is u∗cos(w) and velocity along the vertical is u∗sin(w). During the motion of the projectile there is no force acting in the horizontal direction. There is only the force of gravity acting in the vertically downward direction. So horizontal component of velocity remains same. Only the vertical component changes. Also the net displacement of the particle is 0. s=ut+(gt2)/2 We use this equation in the vector form 0=u∗sin(w)∗t−(gt2)/2 Solving this you get t=2u∗sin(w)/g This is the time of flight of the projectile. During this time the horizontal range covered is R=u∗cos(w)∗2u∗sin(w)/g Simplifying this you get R=(u2)∗sin(2w)/g At the highest point of the projectile the vertical component of the velocity becomes 0. So now we use the formula v2=u2−2as 0=(u∗sin(w))2−2gh Solving this you get h=((u∗sin(w))2)/2g Hope that was useful.
  • 1 answers

Aman Kumar 7 years, 2 months ago

Here.??..check it in revision note section or in videos .....??
  • 4 answers

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

hyyy will you answer my next question ❓ ?

Nancy Rajput 7 years, 2 months ago

welcome?

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

tanks Nancy ☺️

Nancy Rajput 7 years, 2 months ago

If the image of an object is viewed in two plane mirrors that are inclined to each other more than one image is formed. The number of images depends on the angle between the two mirrors.

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