Questions

Q:

Conservation of energy refers to the fact that

A) if you conserve energy you will not be as tired B) energy cannot be created or destroyed but can be converted from one form to another
C) no chemical reaction is 100 percent efficient D) the entropy of the universe is always increasing
 
Answer & Explanation Answer: B) energy cannot be created or destroyed but can be converted from one form to another

Explanation:

"Conservation of energy" refers to the fact that energy cannot be created or destroyed but can be converted from one form to another.

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Filed Under: Physics
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Q:

The speed of a boat when travelling downstream is 32 km/h, whereas when travelling upstream it is 28 km/h. What is the speed of the boat in still water?

A) 27 km/h B) 29 km/h
C) 31 km/h D) Cannot be determined
 
Answer & Explanation Answer:

Explanation:

Ans.  Suppose the speed of boat in still water is x km/h and speed of stream is y km/h

Speedof boat in downstream = (x + y) km/h x+ y = 32 …(i) 

Speed of boat in upstream = (x – y) km/h

x – y = 28 …(ii)

Add. Eqs. (i) and (ii), we get 2x = 60

x = 30 km/h

 

 

 

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Filed Under: English
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Q:

Where do arteries carry blood?

A) Heart B) Lungs
C) Tissues D) Brain
 
Answer & Explanation Answer: A) Heart

Explanation:

Arteries carry oxygenated blood away from the heart to the tissues, except for pulmonary arteries, which carry blood to the lungs for oxygenation (usually veins carry deoxygenated blood to the heart but the pulmonary veins carry oxygenated blood as well).

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Filed Under: Biology
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Q:

War is peace; Freedom is slavery; Ignorance is strength; meaning

Answer

In the novel entitled 1984 by George Orwell's, "War is Peace; Freedom is Slavery; Ignorance is Strength;" is one of the three slogans of the entity known only as “The Party,” English Socialist Party ("INGSOC" for short) of Oceania.


 


It means "describes the act of simultaneously accepting two mutually contradictory beliefs as correct, often in distinct social contexts."

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Subject: English Exam Prep: Bank Exams , GRE , TOEFL
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Q:

When a constant force acts on an object with a mass of 8 kg for a duration of 3 s. it increases the object's velocity from 4 m/s to 6 m/s . What is the magnitude of the applied force?

A) 5.33 N B) 4.33 N
C) 6.33 N D) 3.33 N
 
Answer & Explanation Answer: A) 5.33 N

Explanation:
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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

What is 16 bit?

Answer

Anything larger and the computer would need to break the number into smaller pieces.


 


16-bit is a computer hardware device or software program capable of transferring 16 bits of data at a time.


Today, 16-bit hardware and software has been replaced by 32-bit and 64-bit alternatives, which give the computer more memory to work with; increasing overall performance.


 


For example, early computer processors (e.g., 8088 and 80286) were 16-bit processors, meaning they were capable of working with 16-bit binary numbers (decimal number up to 65,535).

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Q:

In which country the hormone gibberellin was discovered?

A) India B) Japan
C) China D) Russia
 
Answer & Explanation Answer: B) Japan

Explanation:

The hormone gibberellin was discovered in the country Japan.

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Filed Under: Inventions
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Q:

Your ad includes the phrase, "Your friend has a crush on you. See who!" and it gets disapproved. Why?

Answer

AdWords policy does not allow ads to simulate email inbox notifications or fake friend/crush requests.

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