Analyst 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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Q:

5 Digits Number?

What 5-digit number has the following features:

If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number.

Answer

We can make an equation:


3(100000 + x) = 10x+1


(Why? Well, adding 100000 puts a 1 at the front of a five-digit number, and multiplying by 10 and adding 1 puts a 1 at the end of a number)


Solving this gives:


10x+1 = 3(100000 + x)
10x+1 = 300000 + 3x
10x = 299999 + 3x
7x = 299999
x = 299999/7 = 42857


The answer is 42857 (142857 is three times smaller than 428571).

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Q:

Which among the following crop is a major Rabi Crop of India?

A) Bitter gourd B) Cotton
C) Turmeric D) Barley
 
Answer & Explanation Answer: D) Barley

Explanation:

A major Rabi Crop of India is wheat and barley in second place.

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Q:

Laconic most nearly means

A) Talkative B) Wordy
C) Brief D) Long
 
Answer & Explanation Answer: C) Brief

Explanation:

Laconic means using only few words in his/her speech or while talking.

In the given options, talkative, wordy and long are all opposite to laconic and brief is the only word which is similar in meaning of laconic.

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Filed Under: English
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Q:

The kidneys are stimulated to produce renin

A) when the pH of the urine decreases B) when the specific gravity of urine rises above 1.10
C) when the peritubular capillaries are dilated D) by a decrease in the blood pressure
 
Answer & Explanation Answer: D) by a decrease in the blood pressure

Explanation:

The kidneys are stimulated to produce renin by a decrease in the blood pressure.

 

The_kidneys_are_stimulated_to_produce_renin1559028461.jpg image

The renin-angiotensin system or RAS regulates blood pressure and fluid balance in the body. When blood volume or sodium levels in the body are low, or blood potassium is high, cells in the kidney release the enzyme, renin. Renin's primary function is therefore to eventually cause an increase in blood pressure, leading to restoration of perfusion pressure in the kidneys.

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Filed Under: Biology
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1 2875
Q:

Which animal adaptation happened before the others?

A) Reproduction on land B) Development of a colelom
C) Tissue development D) Deuterostome development
 
Answer & Explanation Answer: C) Tissue development

Explanation:
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Filed Under: Animals and Birds
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Q:

In how many different ways can the letters of the word 'HAPPYHOLI' be arranged?

A) 89,972 B) 90,720
C) 72,000 D) 81,000
 
Answer & Explanation Answer: B) 90,720

Explanation:

The given word HAPPYHOLI has 9 letters

These 9 letters can e arranged in 9! ways.

But here in the given word letters H & P are repeated twice each

Therefore, Number of ways these 9 letters can be arranged is 

9!2! x 2! = 9 x 8 x 7 x 6 x 5 x 4 x 32 = 90,720 ways.

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Filed Under: Permutations and Combinations
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Q:

The More You Have, The Less You See. What is it?

A) Light B) Darkness
C) Sight D) None
 
Answer & Explanation Answer: B) Darkness

Explanation:

The More You Have the Darkness, The Less You See i.e, visible less.

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