Each day readers send in questions and feedback concerning the various lessons in the School for Champions website. A total of 16063 letters have been answered. They are listed according to date.
You can read them to further your understanding of the subjects.
|Contact surface in rollers||Machines||Pakistan|
|Loudness of sound under water||Sound||Papua New Guinea|
|Dropping a piano||Gravity||USA|
|Direction of motion||Machines||Tanzania|
|Son is struggling with numbers in school||Grades||South Africa|
|Thanks for the voltage info||Thanks||Australia|
|Computer Science vs Chemical Engineering||Career||Uganda|
|What are quarks?||Physics||Sudan|
|Proof of value of constant||Gravitation||Nepal|
|Not part of bicycle||Machines||Guyana|
|Suggested resource||Mental Health||USA|
|May GOD bless you||Chemistry||Uganda|
|Thankful for what you do||Thanks||USA|
Contact surface in rollers
May 20, 2019
As the friction does not depend upon the surface of contact then how rolling reduces the friction?
Abdur - Pakistan (29046)
If you consider sliding an object across the ground, you can see that using rollers or wheels results in much less friction.
The only friction in using rollers is due to a slight "stickiness" an the contact surface. But this is negligible.
May 18, 2019
Hey School for Champions Editors,
I was doing some research on interview tips and noticed that you have this killer resource page on your site: https://www.school-for-champions.com/career/resources.htm#.XOA9-MgzbIU . Awesome job!
Since you’re clearly an authority on the subject, I thought you’d be interested in checking out my article on "Best Interview Practices for Job Seekers". It’s super in-depth and I think it would make an awesome addition to your resource page (especially as your readers would love and benefit from it immensely).
Here’s the link if you’d like to check it out:
Martin - Germany (29042)
Thanks for the suggested resource. I added a link at https://www.school-for-champions.com/career/resources.htm#Interview_skills
Best wishes for success in your work.
Loudness of sound under water
May 14, 2019
Is the loudness of sound greatest in water than it is in air
Willie - Papua New Guinea (29037)
The loudness or amplitude of a sound under water seems louder than in air. One reason is that in air, only your eardrum detects the sound. However, under water, your eardrum and your skull sense the sound. Also, sound travels faster under water.
You can test the loudness by comparing a sound from the clicking objects together above water and doing the same under water with your head also under water.
Dropping a piano
May 12, 2019
Is there work done on a piano when you drop it from the fourth floor to the ground floor
eman - USA (29032)
Work is defined as the force required to overcome a resistance times the distance traveled.
Lifting a piano would require work to overcome the force of gravity or weight of the object. Work done by gravity in dropping a piano would be overcoming the slight air resistance.
Hopefully, no one is standing under the piano if dropped from the fourth floor.
Direction of motion
May 9, 2019
With reference to the explanation given on the second class lever, you said the movement of both load and effort are in the same direction. THIS IS NOT CORRECT. Take an example of a wheelbarrow which in the second class, in it the load (weight) is directed downward while an effort which is applied is directed (acting) upwards, therefore the movements of these forces (load and effort) are opposite.
I'll be glad to get your reaction.
Issa - Tanzania (29029)
Thank you for your observations. With a wheelbarrow, you pull upward on the handles to raise the load.
I updated the images on Three Lever Classes to clarify the directions on the motions for the various lever classes.
May 8, 2019
I hope your Wednesday is going well. My name is Garrett and I’m reaching out on behalf of Baylor University's Online Graduate Programs. I work with the university to distribute useful school-generated content to credible and relevant websites with similar content and audience interests.
Recently, I came across the "Healthy Aging Resources" page on the School for Champions website, located here:
I was impressed by the gerontology resources you've assembled and was wondering if you'd be open to sharing an additional resource with your community?
If so, I’d like to suggest "How Communities Can Prepare for the Growing Aging Population," published by The MPH online program from Baylor University's Robbins College of Health and Human Sciences. This resource discusses how to make communities more inclusive for the older adult population. It offers examples from ten age-friendly U.S. communities and further examines how changes in things like transportation, housing, and outdoor spaces can help people age actively. I believe this would be an excellent resource for your community as it is relevant to the gerontology resources provided on the page.
Below is the URL to the resource:
Would you be open to sharing this resource with your community on the webpage?
Thank you for your consideration. Please feel free to contact me if you have any questions or need additional information. I look forward to hearing from you soon!
Garrett - USA (29027)
Thanks for the suggested resource. I added a link at Healthy Aging Resources.
Best wishes for success in your work.
Son is struggling with numbers in school
May 3, 2019
my son is doing grade 2 he is eighty years old he is olways strugling to pass at school am worried about it he is not good in counting numbers
Phelelani - South Africa (29024)
It is good that you are helping and giving him encouragement.
You might let him try out Counting Games for Kids on your computer. The practice can be fun for him and get him more interested in the subject. There are other similar websites to help young students practice.
I hope this helps. Best wishes for your son's success in school.
Thanks for the voltage info
May 1, 2019
Thanks for the voltage info. Very helpful
Frank - Australia (29022)
I'm glad the material was helpful to you. Best wishes for success in your endeavors.
Computer Science vs Chemical Engineering
April 30, 2019
which of the two can i study to be employed easily: 1.bachelors in computer science. 2.bachelors in chemical engineering.
atuhaire - Uganda (29019)
There is a demand for college graduates in both areas of study. The most important thing to consider is which are are you most skilled and that you enjoy the type of work.
Note that Computer Science is often used along with Chemical Engineering, so studying both would be good.
It is good to check with companies in your area to see what they have to offer. In this way, you can tell the potential and wages for the type of job you select.
For example, check out:
Computer Programming jobs: http://fresherjobsuganda.com/2018/05/22/graduate-jobs-in-uganda-2018-computer-programmer/
and Chemical Engineering jobs: https://www.engineering.com/jobs/browse-by-country-category/Uganda/Chemical%20Engineering/
I hope that helps. Best wishes for success in your career.
What are quarks?
April 30, 2019
What are the quarks ,and did it found before or after the (the Big Bang Theory).
Abdelgadir - Sudan (29021)
A quark is a fundamental or elementary particle of matter that is part of such particles as protons and Neutrons. See Fundamental Particles of Matter.
Quarks were discovered around 1968.
The Big Bang Theory was proposed around 1929, although there were other similar theories many years before that.
Proof of value of constant
April 24, 2019
Proof of the value of the gravitational constant is 6.67×10^-11
Aniket - Nepal (29010)
Besides the Cavendish Experiment, there have been many other experiments and astronomical measurements to establish the gravitational constant. However, there are slight variations in the values of the constant.
Not part of bicycle
April 7, 2019
which simple machine is not a part of the bicycle: pulley, lever, screw, or wedge?
fiaz - Guyana (28992)
You push on the pedals, which is a lever. The bicycle chain forms a pulley. Bicycles have screws to to hold things together. However, I can't think of where a wedge would be used, so a wedge probably is not part of a bicycle.
March 21, 2019
I came across your page here: https://www.school-for-champions.com/mentalhealth/resources.htm while researching mental health resources and wanted to reach out. I'm a team member of The Recovery Village. We strive to have our website be an educational resource by featuring helpful articles, blog posts, and resource pages to increase understanding and awareness of these mental health disorders that can affect so many.
Would you be able to assist us in helping individuals and their loved ones seeking support by sharing our new mental health resource https://www.therecoveryvillage.com/mental-health/ on your site? It includes valuable information on mental health support, co-occurring disorders, and treatment options as well as phone numbers for The Recovery Village, alcohol abuse, drug abuse, and other national hotlines.
With your assistance, we'll be able to raise mental health awareness and provide support to those in need.
Thanks so much!
Nikkita - USA (28976)
Thanks for the suggested resource. I added a link on our Mental Health Resources page.
Best wishes for continued success in your work.
May GOD bless you
March 17, 2019
May GOD bless you
IJJO - Uganda (28974)
Thank you for the kind blessing.
Best wishes for success in your work. I am sure that God is looking after you.
Thankful for what you do
March 13, 2019
I'm so proud and thankful for what you do, ?? for helping me and others be better, blessings always
Julio - USA (28972)
I am glad the material is useful to you and to others. I know that you will succeed in what you do and will help others to succeed too.
Also, thank you for the blessings. I appreciate it.
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