Questions

Q:

What is a Contact Force and explain with an example?

Answer

A Contact force is a force applied to a body by another body that is in contact with it. Contact force acts on a point of direct contact between the two objects. This force can either be continuous as a continuous force or can be momentary in the form of an impulse. Contact force is governed by Newton’s Laws.


Examples :: Contact force is responsible for most of the interactions we experience in the daily life.


1. Writing your name with a pen, pushing a car up a hill, lifting an object, etc...


2. Kicking a ball, hammering a nail, etc...


are some of the everyday examples where contact forces are at work.


In the first case, the force is continuously applied by the person on the car or pen or an object while in the second case the force is delivered in a short impulse.


 


Contact forces are often decomposed into orthogonal components


one perpendicular to the surface in contact called the normal force, and


one parallel to the surface in contact, called the friction force.

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Subject: Physics Exam Prep: AIEEE , Bank Exams , CAT , GATE
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3 3524
Q:

In the following code can we declare a new typedef name emp even though struct employee has not been completely defined while using typedef? < Yes / No>

typedef struct employee *ptr;

struct employee

{

       char name[20];

        int age;

        ptr next;

};

Answer

Yes

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Subject: Programming

0 3523
Q:

In which city the world's tallest sandcastle has been built  ?

A) Duisburg B) Berlin
C) Havana D) Paris
 
Answer & Explanation Answer: A) Duisburg

Explanation:
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Filed Under: Famous Places
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11 3522
Q:

Which of the following is the largest unit of information?

A) 1 TB B) 1 GB
C) 1 MB D) 1 KB
 
Answer & Explanation Answer: A) 1 TB

Explanation:

1 TB  >  1 GB  >  1 MB  >  1 KB

 

1 Tb (Tera Byte) = 1024 GB

 

1 GB (Giga Byte) = 1024 MB

 

1 MB (Mega Byte) = 1024 KB

 

1 KB (Kilo Byte) = 1024 Bytes

 

1 Byte = 8 Bit

 

Hence, largest unit of information is TB (Tera Byte) and smallest unit of information is Bit.

 

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4 3520
Q:

Sociological analysis of religion is concerned with

A) the purpose of life B) which religions are true and which are false
C) learning the will of God D) patterns of religious activity and their effect on social life
 
Answer & Explanation Answer: D) patterns of religious activity and their effect on social life

Explanation:

Sociology of religion is the study of the beliefs, practices and organizational forms of religion using the tools and methods of the discipline of sociology.

 

Hence, Sociological analysis of religion is concerned with patterns of religious activity and their effect on social life.

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Filed Under: Indian Politics
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0 3519
Q:

The only known ruler in the history of india to have fixed the prices of different commodities, rigidly enforced quality control and ensured easy availability of essential commodities was

A) lltutmish B) Alauddin Khalji
C) Raziya D) Gayasuddin Tughluq
 
Answer & Explanation Answer: B) Alauddin Khalji

Explanation:
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Filed Under: Indian History

2 3519
Q:

Which one of the following Constitutional Amendments introduced the anti-defectio provision in the Constitution for the first time?

A) 51st Amendment B) 52nd Amendment
C) 53rd Amendment D) 54th Amendment
 
Answer & Explanation Answer: B) 52nd Amendment

Explanation:
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Filed Under: Indian Politics

9 3518
Q:

Who has been appointed by Flipkart as an in-charge of the newly acquired e-Bay India business ?

A) Anil Goteti B) S Aparna
C) Rajeev Kumar D) Kalyan Krishnamurthy
 
Answer & Explanation Answer: A) Anil Goteti

Explanation:
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Filed Under: General Awareness
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9 3518