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Q:

A spring is an example of which of these

A) Newton's 3rd law B) Hooke's law
C) Newton's 1st law D) Conservation of mass law
 
Answer & Explanation Answer: B) Hooke's law

Explanation:

When you compress or stretch a spring, as soon as the stress is relieved, the spring attains its normal shape instantly. Its Elastic potential energy helps it do so. Generally, these elastic substances follow the Hooke’s law.

 

According to this Law, the force needed to change the shape of spring is proportional to the displacement of the spring. The displacement referred here is how far the spring is compressed or stretched from its normal shape. Mathematically, Hook’s Law can be summarised as F= – k x. Here ‘k’ is the spring constant and ‘x’ is the displacement.

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Filed Under: Physics
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Q:

As alcohol use continues, the voluntary motor system becomes impaired.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:
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Subject: Biology
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Q:

What are good sources of fat for the body?

A) Fish and eggs B) Nuts
C) Cheese D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The foods that are good source of fat and incredibly healthy to the body ar fatty fish, eggs, nuts, cheese, avocados, dark chocolates, etc...

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Filed Under: General Science
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Q:

If 1/8 of a pencil is black, 1/2 of the remaining is white and the remaining, 3/2cm is blue. Find the total length of the pencil?

A) 8 cms B) 7 cms
C) 9 cms D) 11 cms
 
Answer & Explanation Answer: A) 8 cms

Explanation:

Let the total length of the pencil = x cms

From the given data,

'x/8' is black

Remaining part = x - x/8 = 7x/8

1/2 of 7x/8 is white

=> 7x/16 is white (Remaining part is 7x/16)

And given that the remaining part is blue and is 3 1/2 cm = 7/2 = 3.5 cm

That remaining part = 7x/16

Therefore,

7x/16 = 7/2

x = 16/2 = 8

Hence, the total length of the pencil = x = 8 cm.

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Filed Under: Percentage
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Q:

Depth of ocean is measured by

A) Animometer B) Aerometer
C) Siesmometer D) Fathometer
 
Answer & Explanation Answer: D) Fathometer

Explanation:

Fathometer is used to measure the depth of the ocean.

depth_of_ocean_is_measured_by1542975982.jpg image

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Filed Under: Physics
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Q:

evtlesnioi-Arrange this word

A) Elevision B) Television
C) Senivion D) Telsion
 
Answer & Explanation Answer: B) Television

Explanation:
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Filed Under: English
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Q:

Which sea separates Europe from Africa?

A) The Gulf of Mexico B) The caribbean sea
C) The Mediterranean sea D) Both B & C
 
Answer & Explanation Answer: C) The Mediterranean sea

Explanation:

The Mediterranean sea separates Europe from Africa.

which_sea_separates_europe_from_africa1542971516.jpg image

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Filed Under: World Geography
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Q:

The element common to all acids is

A) Hydrogen B) Oxygen
C) carbon D) Sulphur
 
Answer & Explanation Answer: A) Hydrogen

Explanation:

Hydrogen is the common element in all acids.

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Filed Under: Chemistry
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