Questions

Q:

You are scheduled to leave at 6 pm. Your replacement worker doesn't show up. What would you do?

Answer

If he was unable to make his shift, I would find a replacement, and stay until the replacement came in.

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Q:

GUI stands for

A) Graphical Universal Interface B) Graph Use Interface
C) Graphical Unique Interface D) Graphical User Interface
 
Answer & Explanation Answer: D) Graphical User Interface

Explanation:

GUI stands for Graphical User Interface.

 

A Graphical User Interface is a computer interface that allows users to interact with a device through graphical elements such as pictures and animations, as opposed to text-based commands.

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Q:

Missing letters puzzle

Answer

Answer:  K


Explanation:  In each row, the product of the left and right hand numbers equals the sum of the numerical values of the three letters.

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Q:

Which observation proves that a cell is a eukaryote?

A) It contains DNA B) It contains ribosomes
C) It has a cell membrane D) It has DNA inside a nucleus
 
Answer & Explanation Answer: D) It has DNA inside a nucleus

Explanation:

Eukaryotic cells all have a nucleus. Eukaryotes are organisms that are multicellular, although there are some examples of single cellular eukaryotes. So eukaryotic cells can be either cell with a nucleus or a eukaryotic organism's cell.

The most important feature to judge whether it has nucleus membrane.

And for other choices, they are the common features of eukaryote and prokaryote.

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Filed Under: Biology
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Q:

The memory unit is one part of

A) Input Device B) Central Processing Unit
C) Control Unit D) Output device
 
Answer & Explanation Answer: B) Central Processing Unit

Explanation:

In a computer, memory is one part of Central processing unit i.e, CPU.

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Q:

Data integrity constraints are used to

A) Ensure that duplicate records are not entered into the table B) Prevent users from changing the values stored in the table
C) Control who is allowed access to the data D) Improve the quality of data entered for a specific property like table column
 
Answer & Explanation Answer: D) Improve the quality of data entered for a specific property like table column

Explanation:

Integrity constraints are used to ensure accuracy and consistency of data in a relational database. Data integrity is handled in a relational database through the concept of referential integrity. Many types of integrity constraints play a role in referential integrity (RI).

 

Hence, Data integrity constraints are used to Improve the quality of data entered for a specific property i.e, table column.

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Q:

A famous hill station in Uttar pradesh is...........

A) Darjeeling B) Dalhousie
C) Kulu D) Nainital
 
Answer & Explanation Answer: D) Nainital

Explanation:

Darjeeling is in West Bengal and other two are in Himachal Pradesh.

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Filed Under: Indian Geography

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Q:

A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height?

A) 2.87 sec B) 3.44 sec
C) 4.65 sec D) 5.41 sec
 
Answer & Explanation Answer: B) 3.44 sec

Explanation:

It is launched vertically with an initial speed of 110 ft/sec.

It will reach maximum height when the speed drops to 0.

Vo=110 feet per second 

ho=2 feet 

So, h(t) = -16t^2 +110t +2 

Take the derivative: h'(t) = 110 -32t 

The maximum height will be at the inflection when the derivative crosses the x-axis, then h'(t)=0. 

So, set h'(t)=0 and solve for t: 

0 = 110 -32t 

-110 = -32t 

t=3.4375 

t=3.44 seconds.

 

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Filed Under: Physics
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