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Ampere circuital law can be derived from

Posted by Arjita Singh 6 years, 3 months ago

CBSE > Class 11 > Physics

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What is thermal expansion in isothermal condition

Posted by Khushhal Sharma 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Tanya Chaudhary 6 years, 3 months ago

An the solids are found to expand on heating this is called thermal expansion. And there are 3 types of thermal expansion (1)linear expansion (2) Area expansion (3) Volume expansion

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The geostationary satellite moves in a orbit of radius 3600km from the surface of the earth,the radius of earth is 6400kmand mass of the earth is given. Calculate the gravitational potential at the position of geostationary orbit

Posted by Siddharth Kumar 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Sanjay Suthar 6 years, 2 months ago

Gravitational potential V =-GM/r G=6.67×10^-11 M;mass of earth ?=6×10^24kg r= 3.6×10^6 m+6.4×10^6m Solution- V=-6.67×10^-11×6×10^24kg/1.0×10^7m ==-4.002×10^7j/s

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What is the dimensions of surface tension

Posted by Vishnu Singhal 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 3 months ago

Surface Tension

Surface tension is the property of the liquid surface which arises due to the fact that surface molecules have extra energy.
Surface energy is the extra energy which the molecules at the surface have.
Surface tension is the property of the liquid surface because the molecules have extra energy.
Surface energy is defined as surface energy per unit area of the liquid surface.
Denoted by ’S’.
Mathematically :-
- Consider a case in which liquid is enclosed in a movable bar.
- Slide the bar slightly and it moves some distance (‘d’).
- There will be increase in the area, (dl) where l=length of the bar.
- Liquids have two surfaces one on the bar and other above the bar. Therefore area=2(dl)
- Work done for this change =Fxdisplacement.
- Surface tension(S)=Surface Energy/area
- Or Surface Energy=S x area
- =Sx2dl
- Therefore S x 2dl =F x d
S = F/2d

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the average mass that must be lifted by a hydraulic pressure is 80 kg if the radius of the larger piston is five times that of that of smaller distance what is the minimum force that must be applied

Posted by Farha Sherani 6 years, 3 months ago

CBSE > Class 11 > Physics

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What is ypungs modulus

Posted by Cr Lakshmi 6 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Tushar Kumar 6 years, 3 months ago

Ratio of longitudinal stress to the longitudinal strain

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Prakriti Ojha 6 years, 3 months ago

It is the ratio of longitudinal stress to the longitudinal strain

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What is the relation between force and torq

Posted by Bhupendra Patel 6 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Farhat Shaikh Shaikh 6 years, 2 months ago

Torque is a couple of resistive force

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Prakriti Ojha 6 years, 3 months ago

Torque =r×F

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What made of this sentence

Posted by Aditya Raj 6 years, 3 months ago

CBSE > Class 11 > Physics

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Define hydraulic lift

Posted by Ayush Singh 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Gaurav Bagga 6 years, 3 months ago

Hydraulic lift works on the primciple of pascal law where 1 lift has larger area of crossection and other is of small area of crossection and pressure is constant

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In the oil tin container it is necessary to have only two opening . Why and discuss in detail

Posted by Divya Varshney 6 years, 3 months ago

CBSE > Class 11 > Physics

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Why the path of launching of a rocket is curve

Posted by Tubrat Sahu 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Robinpreet Kaur 6 years, 3 months ago

Because they want to get into the orbit around the earth using as little fuel as possible. OKAY ARE YOU UNDERSTAND MY ANSWER.....

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Why mercury always fill in a thermometer ???

Posted by Priya Parjapati 6 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Gaurav Bagga 6 years, 3 months ago

Mercury is applied ina a thermometer because due to its higher density ie 136×1000

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Yogita Ingle 6 years, 3 months ago

It has a lower freezing point (-39°C) and a high boiling point (35°C). Hence it can be used over a wide range of temperature.
It is shiny liquid metal, hence can be easily seen through the glass of the thermometer tube.
It has a fairly large expansion for a small change in temperature.
It does not stick to the glass tube.

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What is bernolio theory

Posted by Kartike Raj 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 3 months ago

Bernoulli’s Principle

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

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Any buddy is here to help me in physics and economics

Posted by Vikram Shukl 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Robinpreet Kaur 6 years, 3 months ago

Only in physics

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What is Bernoulli 's Theorm ?

Posted by Robinpreet Kaur 6 years, 3 months ago

CBSE > Class 11 > Physics

4 answers

Nikhil Yadav 6 years, 3 months ago

Thanks

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Tanya Chaudhary 6 years, 3 months ago

These theorem states that the streamline flow of an ideal liquid the total energy ( pressure energy,potential energy,kinetic energy ) per unit mass remains constant at every cross section though out the flow.

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Robinpreet Kaur 6 years, 3 months ago

Answer please

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Kartike Raj 6 years, 3 months ago

What is Bernoulli's theorm

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Derivations of kinematic equations

Posted by Selina Raffi 6 years, 3 months ago

CBSE > Class 11 > Physics

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Plot the variations of g with distance r from the center of the earth.

Posted by Avinandan Kumar Paswan 6 years, 3 months ago

CBSE > Class 11 > Physics

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Asecent formula

Posted by Ankit Chauhan 6 years, 3 months ago

CBSE > Class 11 > Physics

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Assuming earth to be a uniform sphere find expression during of earth interm of 'G' and g

Posted by Kunal Kumar 6 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Sonu Goyal 6 years, 3 months ago

g=GM/R^2

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Vikas Moond 6 years, 3 months ago

May be g=GM/r**2

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Kunal Kumar 6 years, 3 months ago

Jaldi bej do

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Any 2 applications of newton's second law????

Posted by Aisha Jain 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 3 months ago

The Second law of motion becomes easy if we know an object’s mass and acceleration so that we can find the net force on the object.

This concept is useful for blocks and rope problems and also for pulley system problems. Also we need to understand that tension is a force so the net tension of an object is the same as the net force.

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Fill up 3.0m/s = _km/hr

Posted by Kavita Yadav 6 years, 3 months ago

CBSE > Class 11 > Physics

4 answers

Rehan Afzal 6 years, 3 months ago

0.833

1Thank You

Tannu Jaglan 6 years, 3 months ago

=3×3600/1000

1Thank You

Tannu Jaglan 6 years, 3 months ago

m/s = km/hr 3 = 1000/3600 3×3600/1000 =10.8

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Abhay Pandey 6 years, 3 months ago

(3*18)/5=10.8km/hr

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A graph between the inter molecular force F acting between to the molecules of a solid and the distance r between them is shown .explain the graph

Posted by Dhanaji Shinde 6 years, 3 months ago

CBSE > Class 11 > Physics

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Two bodies of mass 10kg and 2kg are moving with velocity 2i^- 7j^+3k^ and -10i^+35j^-3k^ m\s .find the velocity of centre of mass .

Posted by Karnail Singh 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Tassu Khan 6 years, 3 months ago

I dont know??

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Show that the maximum height of any mountain on earth cannot exceed 10 km

Posted by Pranavi Tomer 5 years, 4 months ago

CBSE > Class 11 > Physics

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What is the kepler's second law of planetary motion

Posted by Deeksha Baranwal 6 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Roshan Kumar Kumar 6 years, 3 months ago

According to this law, the line joining the sun sweepts out equal area in equal interval of time. And the areal velocity os constant

1Thank You

Tricky Teach 6 years, 3 months ago

After studying a wealth of planetary data for the motion of the planets about the sun, Johannes Kepler proposed three laws of planetary motion. Kepler's second law states. An imaginary line joining a planet and the sun sweeps out an equal area of space in equal amounts of time.

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Soumyadeep Paul 6 years, 3 months ago

Second Law of Kepler is the Law of Area. According to this Law, the line joining the Sun and planet, sweeps out equal areas in equal time interval. The areal velocity is constant.

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A body mass (m) teavlling at a speed (v) strikes with a same mass at rest after collision the kinetic energy of the system is three fourth to that kinetic energy than find the cofficient of restitution

Posted by Rajat Bishnoi 6 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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What is surface tension ?

Posted by Alok Singh 6 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Ashutosh Choubey 6 years, 3 months ago

the attractive force exerted upon the surface molecules of a liquid by the molecules beneath that tends to draw the surface molecules into the bulk of the liquid and makes the liquid assume the shape having the least surface area.

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Gaurav Seth 6 years, 3 months ago

When a small quantity of water is poured on a clean glass plate, it spreads in all directions in the form of a thin film. But when a small quantity of mercury is poured on the glass plate, it takes the form of a spherical drop. Similarly, if a small quantity of water is poured on a greasy glass plate, it also takes the form of small globules like mercury. This shows that the behavior of liquids is controlled not only by gravitational force (weight) but some other force also acts upon it which depends upon the nature of the surfaces in contact. If the weight of the liquid is negligible then its shape is perfectly spherical. For example, rain drops and soap bubbles are perfectly spherical. We know that for a given volume, the surface area of sphere is least. Hence may say that the free surface of a liquid has a tendency to contract to a minimum possible area.

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1newton=?

Posted by Priyanshu Kumar 6 years, 3 months ago

CBSE > Class 11 > Physics