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

If F is force applied and mg is weight of the roller then while pulling the effective weight of roller is mg-Fsin@ and while pushing it is mg+Fsin@. its based on diagram but i cannot draw it here

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For the given pulley block system find the acceleration of 2kg block

Posted by Kunwar Divas Singh 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Pankaj Kansal 7 years, 3 months ago

Mg/m (2×10)/2 Ans 10

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Why all planets are elliptical or spherical ????

Posted by Vikas Tomar 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Vikas Tomar 7 years, 3 months ago

Becos centre of gravity of all planets in at the centre of planets which pulls whole body equally this give spherical shape .

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A car of mass 1250 kg is moving at 30 m/s .its engine delivers 30 kw while resistive force due to surface is 750 N .what max aceleration can be given in the car .?

Posted by Sejal Shivani 7 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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Write the dimension and si unit of linear momentum

Posted by Av Av 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Priyanka Ghosh 7 years, 3 months ago

SI unit of linear momentum is kg.m/s

Dimension of linear momentum is [MLT^-1]

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Calculus formula

Posted by Abhi S 7 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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What's the speed of the light ?

Posted by Dhananjay Das 7 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Kritika Bhargava 7 years, 3 months ago

3×10^8 m/sec

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Pramil Beliya 7 years, 3 months ago

3×10^8m/sec in air 2×10^8 in vaccum

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Anjaly Elizabath George 7 years, 3 months ago

3×10^8m/s

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Why we read physics

Posted by Himanshu Kumar 7 years, 3 months ago

CBSE > Class 11 > Physics

4 answers

Aashna Shringi 7 years, 3 months ago

To study about universe from largest galaxies ro smallest subatomic particle

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Shruti Khete 7 years, 3 months ago

to get knowledge about chemicals

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Sajid Ali 7 years, 3 months ago

To get knowledge about our nature

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Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 3 months ago

why we read chemistry..??

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What is moton ？

Posted by Manish Pal 7 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Anjaly Elizabath George 7 years, 3 months ago

When an object changes its position with time and surrounding the body is said to be in motion

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Himanshu Kumar 7 years, 3 months ago

When an object change its place wr to time then the object is said to be in motion

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Sachin Suyal 7 years, 3 months ago

In physics whenever an object changes its position the the body(object)is said to be in motion. Layer motion can be classified into two types; Uniform motion Non uniform motion

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Units of pressure

Posted by Naveen Tatu 7 years, 3 months ago

CBSE > Class 11 > Physics

4 answers

Dharna Saini 7 years, 3 months ago

Pascal

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Faizan Patel 7 years, 3 months ago

Pascal or N/m'2

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Himanshu Kumar 7 years, 3 months ago

Pascal

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Naveen Tatu 7 years, 3 months ago

Pascal

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A body of mass 50 kg is put on spring weighting machine in a lift.What is the reading of machine when the lift accents with a uniform velocity of 10 m/sec and deccents with a accleration of 5 m/sec*2 ( take g- 10m/sec*2)

Posted by Sayan Sarkar 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Anika Alam 7 years, 3 months ago

Reading of machine when the lift accents with a uniform velocity =m(g+a) =50(10+0)=50×10=500N. Reading of machine when the lift descents =m(g-a) =50(10-5)=50×5=250N

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What is laetant heat

Posted by Anurag Yadav 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 3 months ago

The heat supplied to a substance which changes its state at constant temperature is called latent heat of the body.

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A force oc F = 15+0.50x acts on a particle in X direction where F is in newton and x is in meter. Find the work done by this force during a displacement from x= 0 to x= 2.0 m

Posted by Arnab Nandi 7 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Vijay Giri 7 years, 3 months ago

2222222

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Sandeep Prasad 7 years, 3 months ago

Integrate force and put limit 0 to 2 Ypu will get your work done

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Under what condition is the average velocity and speed is equal?

Posted by Arya Pratik 7 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Aditya Wagh 7 years, 3 months ago

In other words when distance travelled is equal to displacement.

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Arsh Sidhu 7 years, 3 months ago

When the motion of an object is along the straight line , in the same direction

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What are dimensions of a and b in the relation F=a+bx, where F is force and x is distance?

Posted by Arya Pratik 7 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Arya Pratik 7 years, 3 months ago

Can You Explain It ?

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Aditya Wagh 7 years, 3 months ago

a=MLT^-2 b=MT^-2

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Hlo friends

Posted by Dhruv Choudhary 7 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Anshul Jaat 7 years, 3 months ago

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Supriya Shukla 7 years, 3 months ago

Hello

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If r = 2i^ +3 j^ . Find time of flight...

Posted by Vivek Velayudhan 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Aditya Wagh 7 years, 3 months ago

Give some more conditions

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Wha do you mean by Tensor

Posted by Mayank Raj 7 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Yogita Ingle 7 years, 3 months ago

Tensors are those physical quantities which have different values in different directions at the same point.
Moment of inertia, radius of gyration, modulus of elasticity, pressure, stress, conductivity, resistivity, refractive index, wave velocity and density, etc are the examples of tensors. Magnitude of tensor is not unique.

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Gagan Mehta 7 years, 3 months ago

Tensors are physical quantities having different value in different directions but not having specified directions

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What is poiseuille formula

Posted by Jessica Sherine 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 7 years, 3 months ago

Poiseuille studied the rate of flow of a liquid throught a horizontal capillary tube.
He stated that the volume (V) of liquid flowing per second through a capillary tube varies,
i) directly as the pressure difference (p) across the two ends of the tube,
ii) directly as the fourth power of the radius of the tube,
iii) inversely as the length of the tube,
iv) inversely as the coefficient of viscosity of the liquid.
That is, V = (πr⁴p)/8nl

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A ball is dropped from a height h and another ball is projected horizontally with a speed u from the same height h above the ground. Which ball will reach the ground first? Give reason

Posted by Shilpa Ahuja 7 years, 3 months ago

CBSE > Class 11 > Physics