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

Yes, when a man walks, he pushes the ground with his foot. In return, an equal and opposite reaction act, on his foot. The reaction is resolved in two components : horizontal and vertical components. The horizontal component of the reaction helps the man to have forward while the vertical component balances the weight of the man.

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Is it possible that the velocity of an object be in a direction other than direction of acceleration ? If yes,why and if not , why not

Posted by Mohit Yadav 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Arijt Singh 7 years, 4 months ago

Yes example - a ball thrown upward

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two straight line drawn on the same displacement time graph making angle 30 degree and 60 degree which line represents a greater velocity find ratio

Posted by Shivangi Dubey 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Arijt Singh 7 years, 4 months ago

The velocity depends upon tan theta . Greater its value, greater will be the velocity . Here tan 60 > ta 30 so second line represents the greater value. Ratio is 1/3

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Does normal force act in two directions

Posted by Nevatha Vashikaran 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Aaditya Pratap 7 years, 4 months ago

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Arijt Singh 7 years, 4 months ago

No . it always acts away from the surface. Since it is vector, you can find its components

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what is a damping force?

Posted by Tajamul Islaam 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Zee Saleem ?✌️ 7 years, 4 months ago

It is a frictional force that opposes motion and it acts in the opposite direction to velocity

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Express the average distance of the earth from the sun in (1) 1 light year and,(2) parsec

Posted by Ayush Pandey 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Kya koi girl apni fb id bata skti hai?

Posted by Prince Jaat 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Harry Potter 7 years, 4 months ago

kyu bro tujhe raksha bandhan per rakhi bhandh vani h kya

0Thank You

Zee Saleem ?✌️ 7 years, 4 months ago

No.....

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By the use of graph derive kinematics equation

Posted by Swagata Banik 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Nancy Rajput 7 years, 4 months ago

x = total area covered by object =>x=area of rectangle + area of triangle => x=v0t+ 1/2 (v-v0)t =>x=v0t+1/2(at)t ....from 1... => x=v0t +1/2 at^2

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Nancy Rajput 7 years, 4 months ago

=>delta a =delta v/t =>da=dv/dt => da=v-v0/t => at=v-v0 =>v=v0+at

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ANSWER

Newton 2nd law

Posted by Harshit Pathak 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Sejal Sharma 7 years, 4 months ago

It states that time rate of change of linear momentum of a body is directly proportional ti net force applied in the direction of force .....dp/dt=F

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How to calculate relative error

Posted by Meenu Singh 7 years, 4 months ago

CBSE > Class 11 > Physics

3 answers

Nancy Rajput 7 years, 4 months ago

delta a mean /a mean

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Aaditya Pratap 7 years, 4 months ago

Do you like short methods or long

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Aaditya Pratap 7 years, 4 months ago

There are many methods to calculate it

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ANSWER

What is centripital force

Posted by Himanshu Sahu 5 years, 8 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Dimensional method

Posted by Himanshu Sahu 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

A stone falling from the top of a vertical tower has descended Xmeter when another is dropped from a point, Ymeter, below the top. If they fall from rest and reach the ground together, show that the height of the tower is (X+Y) ^2/4X

Posted by Amit Kumar Sharma 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is projectie

Posted by Dhruv Rajput 7 years, 4 months ago

CBSE > Class 11 > Physics

3 answers

Kamal Singh 7 years, 4 months ago

Projectile is a name given to the body which ones thrown into the space with some initial velocity.

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Anushka Shukla 7 years, 4 months ago

When a particle is thrown by making some angle near the earth surface then it moves in curved path the motion of particle is called projectile motion and particle is projectile

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Aditya Pandey 7 years, 4 months ago

Projectile is just a name in which object moves in 2 dimensions

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ANSWER

distance x=1/t+5 ,the acceleration of the particle is propotional to

Posted by V Unnati 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Sir what is the relation between weight and mass of an atom

Posted by Waseem Ansari 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is 0 work

Posted by Rina Tiwari 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Kamal Singh 7 years, 4 months ago

When a force is applied on a body but the displacement is zero

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Akarsh Tiwari 7 years, 4 months ago

zero work; if the component of a force is perpendicular to the displacement, zero work is done. E.g, a boy pushing a wall, a man carrying a load and walking on level ground does no work. Negativ work; if the component of a force is in opposite direction to displacement, the work done is negative!

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ANSWER

Find the value of icap into (kcap into icap)

Posted by Shravani Py 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Kamal Singh 7 years, 4 months ago

0Thank You

Ritu Dhingra 7 years, 4 months ago

K cap into i cap = j cap (if we are finding cross product) K cap into i cap = 1 ( if we are finding dot product)

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How we can know that vector a cross vector B is a scalar quantity or a vector quantity

Posted by Ashutosh Verma 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Anyone frndship with me

Posted by Dhruv Choudhary 5 years, 8 months ago

CBSE > Class 11 > Physics

4 answers

Himanshu Sahu 7 years, 4 months ago

Oķkk

0Thank You

Harry Potter 7 years, 4 months ago

Ya I m here??

0Thank You

Naman Bhargava 7 years, 4 months ago

1Thank You

Dhruv Choudhary 7 years, 4 months ago

Hey

2Thank You

ANSWER

Hlo friends anyone frndship with me

Posted by Dhruv Choudhary 7 years, 4 months ago

CBSE > Class 11 > Physics

5 answers

Dev Tera Yaar Jaat☢️ 7 years, 4 months ago

ha bolo

1Thank You

Manika Gupta 7 years, 4 months ago

Yesss

0Thank You

Dhruv Choudhary 7 years, 4 months ago

Hey

0Thank You

Dev Tera Yaar Jaat☢️ 7 years, 4 months ago

no frand, chai pilo,,fuuuu garam hai

4Thank You

Aman Singh 7 years, 4 months ago

Yes

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ANSWER

Derivation of uniform circular motion

Posted by Kumkum Porwal 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Kumkum Porwal 7 years, 4 months ago

Plz answer thz

0Thank You

ANSWER

Define Rain Man Problem

Posted by Jagandeep Bhatia 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Arijt Singh 7 years, 4 months ago

Rain Man problem includes the problem like in which direction he should open his umbrella .

2Thank You

ANSWER

What is element

Posted by Kajal Kumari 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Arijt Singh 7 years, 4 months ago

Those substaces which cannot be divided further by an physical and chemical processes.

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ANSWER

The initial and final temperature of an oil bath are 25+-0.1°c and 50+-0.2°c resp.what is the rise of temperature of the bath

Posted by Simran Kaur 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Ananya Anand 4 years, 4 months ago

25+-0.3

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What do you understand by parallax and the angle of parallax?how do we use the parallax method for determing the distances of nearby stars?why cannot be the method be used for very distant stars

Posted by Simran Kaur 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Arijt Singh 7 years, 4 months ago

Parallax is a phenomenon in which when an object is seen from different points , its positions seems to vary . The angle opposite to the basis ( line between two observing points). We can find the distance of nearby stars by ovserving that star through telescope from two different positions of the earth . For very distant star the parallactic angle becomes very small and almost 0.

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