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Diwas Pandit • asked a question

Can three vectors not lying in a plane give zero resultant?

No, if three vectors do not lie in a plane, they cannot give zero resultant.

Explanation:

Let A, B and C be three vectors. If they give zero resultant, then

     A+B+C=0

or, A= -(B+C)

Hence, they will produce zero resultant, if A is equal to negative of vector (B+C). The vector (B+C) lies in the plane of B and C. Hence, A will be equal to negative of (B+C) if A, B and C all lie in a plane.


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NANDANI KUMARI • asked a question

How would you account for the following:

(i) Highest fluoride of Mn is MnF4 whereas the highest oxide is Mn2O2

(ii) Transition metals and their compounds show catalytic properties.

ii)Transition metals and their compounds show catalytic activities because of Variable or multiple oxidation states, ability to form complexes, they provide large surface area for adsorption.
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Rabin Kalikote • almost 2 years ago

Wow, this journey has been an awesome one! -- epic one!

We made 'Ask Mattrab' a company. Looking back 6 years, when I was coding the first line of Mattrab, I had no predictions, nor any...
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Bal Bahadur BK

Great my son!

Reply almost 2y
Pranish Uprety

You've been truly inspiration, dai! Congratulations to you and all of us.

Reply almost 2y
LOKESH DAS • almost 2 years ago

Here are some bonny dialogues fromWonder,a wonderful novelby R.J. Palacio. I admire the last one (fav)

Funny how sometimes you worry a lot about something and it turns to be nothing.(page 215)

It was like when you re in a room where one of the lightbulbs on the ceiling isn't working,but you dont realize how dark it is until until someone changes the bulb and then you are like whoa, it s so bright in here.(page -214)

I think there should...

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Himal Rimal • asked a question
Why are we able to hear short wave broadcast better than long wave broadcasts?
Shortwave radio is used for broadcasting of voice and music, and long-distance communication to ships and aircraft, or to remote areas out of reach of wired communication or other radio services and that’s why it is more energetic than long waves. Shortwave radio is radio communication using the upper MF (medium frequency) and all of the HF (high frequency) portion of the radio spectrum, between 1,800–30,000 kHz. Shortwave radio received its name because the wavelengths in this band are...
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Kaushal Ghimire • over 1 year ago

The Moon

Silent and still, the moon shines bright
In the dark, clear sky
Peaceful and calm, the night
A soothing balm to the weary eye

The moon, a glowing orb of light
Illuminates the path ahead
As the night wind whispers through the trees
And the stars twinkle overhead

So let us lay down and rest
And let the moon and night provide
The peacefulness and solitude
That we all need to feel alive

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Atith Adhikari • about 1 year ago

We got this question in the examination yesterday,

"Shed some insight into the play's depiction of the chakari or trash practice; the profession is one of the most important aspects of a person's existence. You have ever noticed that some individuals do chakari or trash that is just done for a momentary benefit - be it private or public organizations, while others have faith in their knowledge, talent, and aptitudes and get name,...

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