Feedback Blog

Each day readers send in questions and feedback concerning the various lessons in the School for Champions website. A total of 15729 letters have been answered.

List of most recent 15 letters

Country

Stating number with exponents Physics Gravitation Philippines

Teacher gets angry at students Grades Philippines

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

Next 15 letters

Stating number with exponents

March 20, 2017

Question

I would like to know why is it in the given example above about gravitational force:
Ex. 6.67*10^-11 Nm^2/kg^2 when multiplied to 4.39*10^47 kg^2 will become 2.93*10^37Nm^2?

Where did the 10^37 came? What is the explaination of that?
I would like to know the exact explaination of that problem.

Thank you.

Ivy - Philippines (27945)

(6.674*10^?11)*(5.974*10^24)*(7.349*10^22) = 292.68*10^35

However, the standard practice to show numbers with exponents is to put the answer in the form of 2.93*10^37. You increase the exponent by 2 when you move the decimal point (divide 293 by 100).

Teacher gets angry at students

March 14, 2017

Question

Khryss Ann Gem - Philippines (27940)

Yes, teachers can get angry at disruptive students. However, the teacher must act mature and know how to deal with such students. The teacher should not lose his or her temper.

The best thing for a teacher to do is to expect occasional disruptive students and have a method to handle the situation. Sometimes sending the student out of the classroom is a method to be used. The school usually has acceptable ways to deal with such students.

Why are letters used in equations?

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)

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.

Why were Clinton years not good for honesty?

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)

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.

Materials for levers

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)

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.

Real clean web site

March 4, 2017

Question

Real clean web site, appreciate it for this post.

TS - USA (27926)

Equation different in textbook

March 2, 2017

Question

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

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.

Thank you for this website

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)

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

Formula without constant and variable

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)

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.

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)

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.

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)

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.

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)

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.

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 ?

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.

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!

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)

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.

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)

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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Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.

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