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What is precision

Posted by Vishal Mishra 8 years, 3 months ago

1 answers

Yash Sharma 8 years, 3 months ago

I means correctness to anyone Like if a machine calcite distance between delhi and mexico is 14000 km and another machine calculated that the distance is 14000.000401 tha second machine will be more precise than 1st 【【Also remember that precision is always calculated in comparison】】

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Is centre mass reality

Posted by Himanshi Pandey 8 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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The moment of inertia of two rotating body A&B areIA & IB (IA›IB) & their angular momentum are equal which one has greater kinetic energy

Posted by Sarthak Kumar 8 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Derivations of all chapter

Posted by Khushi Khushi 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Yash Sharma 8 years, 3 months ago

You have to do it yourself 【【Do all the derivations 2 times in your copy than you will remember it for a long time】】

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What is up Thurston force explain with examples

Posted by Rouble Rajander 8 years, 3 months ago

CBSE > Class 11 > Physics

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Which quantity remains constant during the free fall

Posted by Anshu Pareek Anshu 8 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Akhil Upadhyay 8 years, 3 months ago

Total mechanical energy, acceleration due to gravity (g)..remains constant

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Prakriti Anand 8 years, 3 months ago

Velocity remains constant because during free fall net force acting on body is 0 .

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Rahul Poddar 8 years, 3 months ago

During free fall the total mechanical energy of a body remains constant

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Define distance and displacement ?

Posted by Yo Yo Honey Singh ? 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Akash Raj 8 years, 3 months ago

Total distance covered by a body is called distance and the shortest distance covered by a body is called displacement

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State Newton 1st law of motion

Posted by Guru Guru 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Mansi Shrivastava 8 years, 3 months ago

It states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

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Center of mass of motion object

Posted by Addya Sharma 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Akash Raj 8 years, 3 months ago

It is a point where whole mass of body is supposed to be concentrated

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Does the work done depends on what the body move fast or slow

Posted by Aman Tiwari 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Yash Sharma 8 years, 3 months ago

Yes

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What is centripetal force and centrifugal force

Posted by Nikhil Science 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Rahul Poddar 8 years, 3 months ago

Centripetal force is the force required to move on a circular path and it acts towards the centre but centrifugal force is a pseudo force which acts opposite to centripetal

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Subtract 2.5x10⁴ from 3.9x10⁴+¹ with due regards to significant figures

Posted by Himesh Verma 8 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

what is the full form of gmrt

Posted by Mayank Lakhina 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Mayank Lakhina 7 years, 9 months ago

giant meterowave radio telescope

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How to draw a vector perpendicular to another vector? Explain with example.

Posted by Vaibhav Mittal 8 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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What is orbital velocity

Posted by Ruchika Kanwar 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Amar Kumar 8 years, 3 months ago

Orbital speed of a body generally a planet is the speed at which it orbits around the barycentre of a system usually around a more massive body.

It can be used to refer to either the mean orbital speed, i.e. the average speed as it completes an orbit.

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What is law of inertia?

Posted by Shruti Saini 8 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Vaibhav Mittal 8 years, 3 months ago

Newton's first law of motion is also called as law of inertia.

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Shiv Pratap 8 years, 3 months ago

Inertia means register to change. The inherent property of a material body by virtue of which it cannot change by itself its state of rest or of uniform motion in a straight line

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It is necessary to any object the center of mass always lies inside the object?

Posted by Nikhil Science 8 years, 3 months ago

CBSE > Class 11 > Physics

4 answers

Tanvi Dwivedi 8 years, 3 months ago

Yes it is compulsory to hold a body so when center of would act outwards how would you hold it

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Vaibhav Mittal 8 years, 3 months ago

No it is not necessary. Take the case of a ring, its centre of mass lies at its centre and not inside the ring

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Paras Sharma 8 years, 3 months ago

No it is not compulsory

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Shiv Pratap 8 years, 3 months ago

Yes it is necessary

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What is a parallax method ?

Posted by Himanshu Pandey 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Amar Kumar 8 years, 3 months ago

To measure large distances, such as the distance of a planet or a star from Earth, astronomers use the principle of parallax. Here, the term parallax is the semi-angle of inclination between two sight-lines to the star, as observed when Earth is on opposite sides of the Sun in its orbit.

Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.[

Parallax also affects optical instruments such as rifle scopes, binoculars, microscopes, and twin-lens reflex cameras that view objects from slightly different angles. Many animals, including humans, have two eyes with overlapping visual fields that use parallax to gain depth perception

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formula for instaneous acceleration

Posted by Sirajuddin Choudhary 8 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Mauryavanshi Akash 8 years, 3 months ago

∆v\∆t it is the instantaneous rate of change of velocity with respect to to time

4Thank You

Amar Kumar 8 years, 3 months ago

The Acceleration is the rate of change of velocity with respect to time.
The Acceleration can also be defined mathematically by
a = v/t ,
Where, a = acceleration of the moving body ,v = velocity of the moving body ,t = time.

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An elevator weighing 1500kg is to lift up at a constant velocity of 0.4 m/s by a motor. Assume that a 4000 frictional force opposes its motion in motor. Calculate the power of motor.

Posted by Sandhya Prajapati 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Sandhya Prajapati 8 years, 3 months ago

R u psycho Don't u hav any sense how to talk

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What is lamia theorem

Posted by Mauryavanshi Akash 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Sweety Sheoran 8 years, 3 months ago

It states that if three forces acting at a point are in equilibrium ,then each force is proportional to the sine of the angle between the other two forces. I.e.,A/sin alpha=B/sin bita=C/sin gama. Where A,B,C are three forces and alpha, bita and gama are the angle between forces B and C,C and A,A and B respectively.

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Prove that analytical method of vector addition by triangle law

Posted by Nishant Gupta 8 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Mansi Shrivastava 8 years, 3 months ago

To explain and calculate it

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Mansi Shrivastava 8 years, 3 months ago

It require diagram...

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What is inertia of rest

Posted by Ishanr Sharma 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Amar Kumar 8 years, 3 months ago

Inertia of Rest is the tendency of an object (or body) to continue its state of rest unless it is acted upon by an external force. Some of the examples for Inertia at rest are given below: Fruits fall down due to inertia of rest when the branches of a tree are shaken.

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The identical spheres A, B, and C, each of radius R are placed touching each other on a horizontal table. Where is the center of Mass of the system located relative to the center of the sphere A?

Posted by Nikhil Kashyap 8 years, 3 months ago

CBSE > Class 11 > Physics