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Give the geometrical meaning of dot product

Posted by Arti Singh 6 years, 4 months ago

CBSE > Class 11 > Physics

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Explain pulling law long roller is easier than pushing it by vector analysis

Posted by Arti Singh 6 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Janvi Sharma 6 years, 4 months ago

While we push a lawn roller one component of the applied force acts in the direction of weight and makes it heavier thus pushing becomes difficult on the other hand when we pull it one component of applied force decreases the net weight and pulling becomes easier

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In increasing order physical fundamental forces

Posted by Sakshi Goenka? 6 years, 4 months ago

CBSE > Class 11 > Physics

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Find the component of B vector along A vector.

Posted by Soniya Rawat 6 years, 4 months ago

CBSE > Class 11 > Physics

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Characteristics of physical unit

Posted by Sakshi Goenka? 6 years, 4 months ago

CBSE > Class 11 > Physics

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Shivam Sharma 6 years, 4 months ago

Physical cu

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Two towns a and b are connected by regular bis services

Posted by Anshool Sharma 6 years, 4 months ago

CBSE > Class 11 > Physics

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Derive an expression for the centripetal acceleration of a particle moving with uniform speed V along a circular path of radius r discuss the direction of these acceleration.

Posted by Sonakshi Singh 6 years, 4 months ago

CBSE > Class 11 > Physics

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Find the vector 4i+3j+k and vector 12i+9j+3k

Posted by Anushka K. 6 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Aditya Narayan Singh 6 years, 4 months ago

48(1)+27(1)+3(1)= 78

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Lalit Yadav 6 years, 4 months ago

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What is the principle of homogeneouty?

Posted by Ajay Kumar 6 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Unnati Pragya 6 years, 4 months ago

According to the principal of homogeneity a physical equation will be dimensionally correct if the dimension of all the term occurring on both side of the equation are the same

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What is instantaneous velocity??

Posted by Ayush Vishwakarma?? 6 years, 4 months ago

CBSE > Class 11 > Physics

3 answers

Anant Tripathi 6 years, 4 months ago

The velocity at any instant on a plane is called Instantaneous velocity. FOR EXAMPLE--- velocity at time t=8th sec,t=10th sec etc.

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Unnati Pragya 6 years, 4 months ago

the velocity of an object at a particular instant of time or at a particular point of its path is called its instantaneous velocity

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Prashant Kumar 6 years, 4 months ago

The velocity at any instant

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Velocity time graph for a moving object is shown in figure.what is the total displacement of object during the time interval,when there is zero acceleration and retardation? What is the displacement in 0 to 40 second

Posted by Ujjwal Malhotra 6 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Manan Aggarwal?? 6 years, 4 months ago

Bhai graph kha hai?

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20t + 5t square + 3 find displacement between time 2sec and time 4sec

Posted by Satveer Singh 6 years, 4 months ago

CBSE > Class 11 > Physics

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Convert 2.91 * 10-4 radian into degree

Posted by Sakshi Yadav 6 years, 4 months ago

CBSE > Class 11 > Physics

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Example 4.9 of ncert

Posted by Gun 6 years, 4 months ago

CBSE > Class 11 > Physics

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a body is projected with velocity u its max. height is half the horizantal range its range will be

Posted by Gourav Yadav 6 years, 4 months ago

CBSE > Class 11 > Physics

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A body traveling with uniform acceleration crosses two points A and B with velocity 20m/s and 30m/s . Then the speed pf body netween A and B is

Posted by Vivek Makwana 6 years, 4 months ago

CBSE > Class 11 > Physics

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What is impulse and monmentum?

Posted by Pankaj Sharma 6 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Milan Rajput 6 years, 4 months ago

The product of mass and velocity is called momentum

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Yogita Ingle 6 years, 4 months ago

Momentum…
is a quantity that describes an object's resistance to stopping (a kind of "moving inertia").
is represented by the symbol p (boldface).
is the product of an object's mass and velocity.
p = mv
is a vector quantity (since velocity is a vector and mass is a scalar).
Impulse…
is a quantity that describes the effect of a net force acting on an object (a kind of "moving force").
is represented by the symbol J (boldface).
is the product of the average net force acting on an object and its duration.
J = F̅Δt
is the force-time integral.
J = F dt is a vector quantity (since force is a vector and time is a scalar).

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Why do not a parabola covers straight path when it thrawn horizontally....??????

Posted by Ravi Verma 6 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Ravi Verma 6 years, 4 months ago

???????

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Ayush Vishwakarma?? 6 years, 4 months ago

Hichki movie dekh lo

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When average velocity and instantaneous velocity are equal????????

Posted by Ravi Verma 6 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Unnati Pragya 6 years, 4 months ago

instantaneous velocity is equal to the limiting value of the average velocity of the object small time interval taken around the that instant when the time interval approach zero does instantaneous object is equal to the first order derivation of its displacement with respect to time

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Tarun Choudhary 6 years, 4 months ago

Average velocity is equal to instantaneous velocity when acceleration is zero.

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Gravitation is the force of attraction b/w two bodies then why do not two peaple attract or two chair not attract with each other ???????

Posted by Ravi Verma 6 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Ravi Verma 6 years, 4 months ago

?????

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Anurag Tiwari 6 years, 4 months ago

Because gravitational force is most weakest fundamental force so,that's why we are not attracted to each other

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Three equations of motion by graphically method

Posted by Pinky Mishra 6 years, 4 months ago

CBSE > Class 11 > Physics

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The density of cube is measuring it's mass and length of its side. If the maximum error in the measurements of mass and length are 2 % and 3%respectivly. Find the error in density

Posted by Ankit Rexwal 6 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Khushi Tyagi 6 years, 4 months ago

Density =mass/volume Volume =(length)^ 3....so volume =(3) ^3=27 Now, Error in density =error in mass +error in volume Density error =2+27=29%...Answer

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Example 3.9

Posted by Mudassir Hussain 6 years, 4 months ago

CBSE > Class 11 > Physics