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Feedback Blog

Each day readers send in questions and feedback concerning the various lessons in the School for Champions website. A total of 15727 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

Why are letters used in equations? Algebra Nigeria
 
Why were Clinton years not good for honesty? Education Congo
 
Materials for levers Machines India
 
Real clean web site Thanks USA
 
Equation different in textbook Physics Waves India
 
Thank you for this website Thanks Physics Germany
 
Formula without constant and variable Algebra UAE
 
When should I write my biography? Biographies Congo
 
Registering for online speaking training Speaking Nigeria
 
Dog bitten by Pit Bulls Animal Health USA
 
Using static electricity to charge phone Physics Static Electricity Egypt
 
Link offered from student Aging USA
 
Suggested resource Knowledge USA
 
Uses for friction Physics Friction Nigeria
 
Thank you for your website Thanks Physics USA
 

Next 15 letters

 





Why are letters used in equations?

Algebra

March 11, 2017

Question

why did they choose to use letter of alphabets or other symbols as a subject of the formular when numbers can still serve and is even easier to be used in rounding up calculation?

Chidi - Nigeria (27935)

Answer

Numbers are used in specific cases. The letters of the alphabet are considered variables, such that the equation or formula can be used with any numbers.

See Variables and Constants in Algebra for an explanation.

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Why were Clinton years not good for honesty?

Education

March 9, 2017

Question

Why does William Bennett say that the Clinton years were not good years for impressing the virtue of honesty on our kids ?

Lucy - Congo (27934)

Answer

Although former President Clinton showed dishonesty during the Clinton-Lewinsky affair, I don't think that Mr. Clinton or people in his administration were basically dishonest.

Mr. Bennett's view of the Clinton years is somewhat biased by his political views, since he is a Conservative Republican and Clinton is a Democrat.

I hope that helps in your understanding. Best wishes for success in your studies.

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Materials for levers

Machines

March 8, 2017

Question

With what material mechanical lvers are made up of?
And what are the operation of mechanical levers?

Thank you :)

Chinmoy - India (27933)

Answer

A lever can be made of any material that is solid and strong enough to withstand a force. This includes some board used to lift an object on a pair of pliers. Look at the examples on the lever pages.

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Real clean web site

Thanks

March 4, 2017

Question

Real clean web site, appreciate it for this post.

TS - USA (27926)

Answer

Thanks for your comments. I'm glad the website met your approval.

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Equation different in textbook

Physics

March 2, 2017

Question

In textbook eq. is given in terms of v, but in your lesson its given in terms of lambda.

Rajendra prasad - India (27919)

Answer

The velocity of a waveform--especially for light or sound--is often designated as "c" instead of "v". Lambda represents the wavelength.

You can also rearrange the equation to be wavelength = velocity/frequency.

Also see Doppler Effect Equations for Sound.

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Thank you for this website

Thanks

March 1, 2017

Question

Hi, I only want to say thank you for this website and for keeping it up. It is nice to read some physics that is in the way your website describes the subject.

Shanon - Germany (27916)

Answer

I'm glad the material has been useful to you. Best wishes for success in your learning about Physics, as well as other topics.

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Formula without constant and variable

Algebra

March 1, 2017

Question

Using formula without constant and Variable is right or wrong.(4-9/2)square 2 please clear it.thanks

Jamil - UAE (27918)

Answer

Just having numbers in the expression is simply an arithmetic exercise. What you have written is (4 - 9/2)^2, which would be (-1/2)^2 = 1/4.

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When should I write my biography?

Biographies

February 27, 2017

Question

Good Day! My name is Gabriel, I am 24 years old and I want to know at what age am I supposed to write my biography?
Thank you

Gabriel Clef - Congo (27910)

Answer

A biography is usually about some other person. An autobiography is what you write about yourself.

Some people keep a journal to write down interesting events in their lives. You can start writing about yourself and activities at any age.

When seeking a job, they often want to know what you have achieved related to the type of work. It is often good to have that written down beforehand.

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Registering for online speaking training

Speaking

February 25, 2017

Question

Greetings! Please how can I register for this free online public speech traning?

Sylvanus - Nigeria (27907)

Answer

You do not have to register to use our Public Speaking lessons.

Although you can read about giving a speech, the best way to perfect your skills is by actually practicing speaking in front of a group. A good place to do that is through the Toastmasters Club. See Lighthouse Toastmasters in Lagos, Nigeria for information, as well as the location of other clubs in your area.

I highly recommend Toastmasters as a way to gain speaking skills and to get over any fears you have.

Best wishes on becoming a top-notch speaker.

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Dog bitten by Pit Bulls

AnimalHealth

February 25, 2017

Question

My Pitt got attacked by two other pit bulls. We were sitting down on steps. He has puncture wounds on his chest throat behind his right ear and one on the top of his head and some scratch marks around his mouth. He is laying still and sleeping a lot and would not eat which is one of his favorite things. My question is should he be seen by a vet?

Sue - USA (27908)

Answer

You definitely should bring your dog to see a vet as soon as possible. You need to make sure the wounds are not serious and to protect against infection from the bites.

I hope your dog is OK. Best wishes for his complete recovery.

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Using static electricity to charge phone

Physics

February 24, 2017

Question

if i somehow generated this static electricity, how would i use it for turning on something ?
and how much electricity needed to make a phone charger work for example ?

nada - Egypt (27904)

Answer

Static electricity is static and does not move like DC or AC electricity.

Most phone chargers use alternating current (AC) electricity to charge the batteries. However, there are some new chargers that use the wireless electricity signals to charge the batteries.

Static electricity can be used to generate sparks. That might be able to turn something on. But also, the sparks can cause damage to electrical devices.

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Link offered from student

Aging

February 24, 2017

Question

Good morning!

My name is Bella Melton, and I tutor middle school and high school students. I am helping a student of mine with a project about the growing problem of substance abuse among the elderly.

Anyway, thank you so much for posting information for seniors on your website. For example, this article (http://www.newbeginningsdrugrehab.org/guide-to-addiction-prevention-for-seniors) that my student Anna found valuable. Anna will surely use it for her project!

She also found this page and thought it would be an excellent addition to your website:
https://addictionresource.com/addiction/substance-abuse-among-seniors/ It’s an article on Addiction Resource that explains the reasons behind the problem of drug abuse among senior citizens.

If you do decide to add that link to your page, please let me know! I would be excited to show Anna that we’re able to give something back!

Bella - USA (27905)

Answer

Thanks to you and Anna for the link on substance abuse among seniors. I added the link on Healthy Aging Resources.

Best wishes for success in your class, as well as success for Anna in her project.

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Suggested resource

Knowledge

February 24, 2017

Question

Hi there,
I was just reading your website on Knowledge Resources. Thanks for sharing that, I learned a lot.
Also, if you're open to suggestions, I think the article below would be a great addition to your list of learning.

How To Study Effectively - Study Tips & Study Skills.

Yes, I wrote it myself. As a teacher, I devote myself to researching study skills. I wish to help every learner all over the world.
Thank you very much for taking the time to read this. Waiting for your review.
Best regards,

Tommy - USA (27903)

Answer

Thanks for the suggested resource. I added it to Knowledge Resources and Good Grades Resources.

Best wishes for success in your teaching and writing.

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Uses for friction

Physics

February 23, 2017

Question

List 12 uses of friction and disadvantages of friction

ade - Nigeria (27902)

Answer

There are some items listed on the Uses of Friction and Problems Caused by Friction pages.

You can look around you to see many other examples of uses and disadvantages that are similar.

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Thank you for your website

Thanks

February 22, 2017

Question

Sir,

I just want to thank you for your website. I'm 68 years old and have mild cognitive impairment. I've always loved science but because of the way my life went, I couldn't get to study it.

However, I have kept up with memorizing subjects throughout my life. Therefore, that part of my mind still works!

I fell in love with particle physics while take astronomy and cosmology in a free library class.

I plan to stick with it until I die!

Thank you again.<

Deborah - USA (27899)

Answer

I am glad the material was useful and interesting to you.

It is good to have something you love and want to learn more about it. That also helps your mind to avoid symptoms of aging.

Best wishes to keep learning for a long, long time.

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