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Each day readers send in questions and feedback concerning the various lessons in the School for Champions website. A total of 16150 letters have been answered. They are listed according to date.

You can read them to further your understanding of the subjects.



List of most recent 15 letters

Title

Subject

Section

Country

Attracting dust Physics Static Electricity USA
 
Insight on Space and Time Physics Matter India
 
Plant competition Competition TZ
 
Friction Reference Physics Friction Iran
 
Charge a metal bar to be a magnet Physics Zambia
 
Suggested resource Behavior USA
 
Writing article SfC Australia
 
Suggested resources School for Champions USA
 
Thanks SfC France
 
Permission School for Champions USA
 
Ultrasonic sound Sound Uganda
 
Baby squirrel lost its tail Behavior India
 
Suggested resource SQL Canada
 
Angle of swing Motion Singapore
 
Thanks Religion UK
 

Next 15 letters





Attracting dust

Physics

July 23, 2020

Question

I would like to know if it is possible, and if so how, to electrostatically charge string so that it will attract chalk dust. The string can be be nylon or any other material about 1.5 mm thick.
Thank you

ALFRED - USA (29563)

Answer

Although a nylon string can be electrostatically charged by stroking it with something like a polyester cloth, the big problem with attracting chalk dust is the small surface area of the string. Just handing the string near a chalk board will only attract a small amount of the dust. Yuo might need some other configuration to do the job.

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Insight on Space and Time

Physics

July 17, 2020

Question

Hello,

This is Yug Patel from Gujarat, India.

My topic is Space - Time Relation.

-I just got to know about it when i was wondering in my room about the topic space, time, and all such beautiful events that we get to see.

-So, as we know that we are still finding answers to the questions that what is beyond Universe or what is much small than an Atom ? It's answer could be that there is no limit of anything. 

-I want to think of a situation, here when you see an Elephant walking according to us it is walking slowly ; and if we see an Ant walking it seems quite faster. Although they both travel with same speed just the difference is reality and frame of reference.

-According to Ant world is so big but for an Elephant world is slight small if we compare it with human's frame of reference.

-Just like that an Atom is much much smaller and Universe is very very big.

So according to the situation time seems to run slow as we increase our size and time run fast as we decreases our size. Because an event like destruction of atom take just fraction of second but dying of star take billion of years.

-So according to me there could be no end of universe or nothing beyond an atom. But there could be a multiple universe dimensions as we look much smaller in an atom or beyond a Universe.

- Just imagine it your size keep increasing with more than speed of light or decreases with same speed of light, and you see that universe is just a small molecule and you more such molecule and then you see that all those molecule (universe) forms an object which can be anything and finally you see that you arrived in another dimension.

If we talk about another situation then assume that your size keep on decreasing and you see bacteria, then molecule, then atoms, and then many more this and you land on a planet like thing, which could give you an Idea that you arrived in another dimension.

So basically there could be no end of anything.

And if this is possible which can be possible because whatever we found yet are just some hypothetical theories made on our assumption.

-After all this, i wanted to ask one question that if this is true then what could be more or what i had missed ?


Thank you so much for giving your beautiful time to read my message.

I hope you would have found it interesting.

Yug - India (29558)

Answer

Thank your for your insight and ideas about the relationship between the size of objects, humans, or animals and their perception of time and motion.

Observations of things around you when you decrease or increase your size or velocity points to their relativity. Some scientists feel that time is the 4th dimension, although others believe time is an extension of each dimension of space.

It is good to delve into these matters. Best wishes for success in your studies and observations.

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Plant competition

Competition

July 13, 2020

Question

Which mechanisms do plant use to evercome competition as one among their stress factor

Prisca - TZ (29541)

Answer

Plants will often try to block out sunlight reaching other nearby plants. For example the leaves of dandelions will spread to kill nearby grass. Also, other plants grow high, in order to block sunlight from nearby plants. Another strategy is to have a root system that hinder nearby plants.

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Friction Reference

Physics

July 9, 2020

Question

Hi
What is the reference or table of rolling coefficients of friction coefficients?

danial - Iran (29538)

Answer

"Resources and references" on the page points to Rolling friction and rolling resistance for the table.

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Charge a metal bar to be a magnet

Physics

June 15, 2020

Question

Explain how you can charge a metal bar to be a magnet?

Mwape - Zambia (29522)

Answer

One way to magnetize a metal bar is to wrap it with wire and send current through the wore, making the bar an electromagnet. See Electromagnets.

Another way is to stroke the metal bar with another magnet in order to align its atoms.

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Suggested resource

Behavior

May 26, 2020

Question

Hi there,

My name is Katherine. I'm a research assistant at the University of Connecticut.

I just had to reach out to thank you for providing such great resources on your page: https://www.school-for-champions.com/behavior/resources.htm

I am currently doing a study on web-based dissemination of canine nutrition information and while doing my research, I came across your page and found it to be a great reference. I was surprised at the wealth of data available and it significantly helped trim my timeline.

As a small token of my appreciation, I thought of sending along a resource that I came across my research: https://www.pawstruck.com/blogs/news/ultimate-guide-to-dog-care-from-puppy-to-senior

This one provides information on dog care but for first-time dog owners and has really great content visuals. I'm hoping it would help a lot of your readers as much as it helped me. If you wouldn't mind adding them to your resources.

Thanks again and hope to hear back from you soon!

Sincerely,

Katherine - USA (29497)

Answer

I'm glad the material has been useful to you and your research.

Thanks for the your suggested resource. I added a link at:
https://www.school-for-champions.com/behavior/resources.htm#Dogs

Best wishes for success in your work.

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Writing article

SfC

May 25, 2020

Question

Hi guys!

I've seen you folks doing a great job on your website, really loved it!
So, I want to write an article excusively for your website.
Let me know if that is possible.

Stay healthy and safe,

Jennifer Broflowski

Jennifer - Australia (29495)

Answer

The best bet would be to send a link to the article's web page that I can post as a resource.

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Suggested resources

School for Champions

May 24, 2020

Question

Hi :)

I saw that you link to petbucket.com at https://school-for-champions.com/animalhealth/dogs_flea_bite_problems.htm

I was wondering if there is anything I can do for you to get a mention like that too?

Let me know what I can do in exchange for your time.

Kind Regards,

**Emily Green**

Founder & Chief Editor | DoggieDesigner.com

Emily - USA (29493)

Answer

It looks like you have a number of good articles on dog health.

Just send me a link to the web page or article you want to refer to and I will post it.

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Thanks

SfC

May 22, 2020

Question

school-for-champions.com is really good

Peter - France (29490)

Answer

Thanks for the kind words. I'm glad the material was useful to you.

Best wishes for success in your activities.

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Permission

School for Champions

May 11, 2020

Question

Dear Mr. Kurtus,

I would like to ask for permission to utilize your list "Importance of Good Character in School Character”. in a Power Point Presentation on Professionalism to a group of FAA Supervisors, and citing you as the source. This presentation is for our supervisors training only and will not be sold.

Sincerely,
DJ Johnson
ZID ARTCC - Training Support
317-247-2534

DJ - USA (29479)

Answer

You have permission to use our list in your presentation.

Best wishes for success in your work.

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Ultrasonic sound

Sound

May 4, 2020

Question

what is meant by the term ultrasonic sound?

Muhindo - Uganda (29473)

Answer

Ultrasonic sound consists of sound waves with frequencies above the upper limit of human hearing. An example of such high frequency sound (or ultrasonic sound) is a dog whistle that has such a high pitch that humans cannot hear it.

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Baby squirrel lost its tail

Behavior

April 30, 2020

Question

Baby squirrel lose its tail ...how we can help
How much time its take to grow again

Jagriti - India (29467)

Answer

Losing its tail is often a mechanism to save the squirrel's life when attacked. Unfortunately, the tail does not grow back, and the loss of it affects the life of the squirrel.

See What Happens When A Squirrel Loses Its Tail? for good information on the subject.

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Suggested resource

SQL

April 29, 2020

Question

Hi there!

I wanted to say how great I find your website! I stumbled across is while searching for data resources.

I noticed your roll-up of SQL resources (https://www.school-for-champions.com/sql/resources.htm#.XqmVMUdKiHs). I recently published a comprehensive introduction to SQL that includes a free PDF download of the entire tutorial, a SQL cheat sheet, and a database to follow along with.

I was wondering if you might be willing to include it? It's linked here if you'd like to check it out: https://datagy.io/sql-beginners-tutorial/

If there's something I can do for you, please let me know!

Best regards and thanks for the great content!

Nik

Nik - Canada (29462)

Answer

I'm glad you found the site useful. Thanks for the resource. I added a link to the page from:
https://www.school-for-champions.com/sql/resources.htm#Tutorials

Best wishes for success in your work.

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Angle of swing

Motion

April 29, 2020

Question

What does the angle of swing depend on.
In a Cuckoo Clock, how can I make the angle of swing bigger
Thanks
Sam

Sam - Singapore (29464)

Answer

In a Cuckoo Clock, the pendulum is usually driven be a spring mechanism that also limits the angle. The length of the pendulum wire affects the angle.

In some clocks, the pendulum can be physically started at any angle, but that also affects how long it will operate.

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Thanks

Religion

April 27, 2020

Question

just wanted to say I very much like your down-to-earth website... I am a practical philosopher working on what is the best way to put across my thoughts to a very diverse audience without it being too academic (for those that might need help the most).

simon - UK (29457)

Answer

Thanks for the kind words. I am glad the material was useful to you.

Best wishes for success in your work and in getting your thoughts across in an understandable manner to other people.

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