Each day readers send in questions and feedback concerning the various lessons in the School for Champions website. A total of 15675 letters have been answered. They are listed according to date.
You can read them to further your understanding of the subjects.
|Recommending mesothelioma resource||Health||USA|
|Weight of two containers of water||Physics||Fluids||Egypt|
|Gas pressure on .5 square inch area||Physics||Pakistan|
|More electrons than protons||Physics||Static Electricity||Phillippines|
|Silk and static electricity||Static Electricity||USA|
|Paperback spine labeling||Fiction||USA|
|Convert mega Hz to peta Hz||Waves||Nigeria|
|Efficiency of a screw jack||Machines||Ghana|
|Increase mechanical advantage in simple machine||Machines||Uganda|
|Animal and plant groups||Physics||USA|
|We have a universal soul||Religion||USA|
|Correction on Rosa Parks||History||USA|
|Hears constant noises in house||Sound||New Zealand|
|How is Braille used to extend vision?||Senses||Jamiaca|
Recommending mesothelioma resource
January 16, 2017
My name is Virgil Anderson, and I’m a cancer patient at NCI. I saw some information on your site about mesothelioma and asbestos, and I was hoping you had room for mesothelioma.net. The medical professionals behind mesothelioma.net got me into NCI, and have been responsible for my continued battle against mesothelioma. They sponsor The American Cancer Society, ALA, Make a Wish Foundation, MD Anderson and many, many more.
Please, if there’s anything you can do to help, let me know.
I appreciate your time in advance, and hope you’re off to a good start in 2017.
Virgil - USA (27809)
Thanks for the information. I checked an saw that I already have a link to mesothelioma.net. However, I moved it to a more prominent position.
Best wishes for a full recovery from your cancer.
Weight of two containers of water
January 16, 2017
Two containers one of them has water and small piece of wood and another one has only water which one is heavier ?
Misho - Egypt (27810)
If both containers have the same amount of water in them, then the one with the wood in it would be heavier by the weight of the wood.
However, if the containers were full to the top and the piece of wood was added to one of them, some water would overflow from the container. The weight of the overflow water would be the weight of the water displaced, such that both containers would then weigh the same.
Gas pressure on .5 square inch area
January 13, 2017
what will the gas pressure on .5 square inch area if the pressure is 10 psi in a container of gas.
asif - Pakistan (27801)
"psi" stands for "pound per square inch". If the area is 0.5 square inch, the pressure would be 5 pounds.
More electrons than protons
January 12, 2017
what is the overall charge of an object that has 18 more electrons than protons?
jeffrey - Phillippines (27799)
Negative ions may have a few more electrons than protons. It would be very unusual to have 18 more electrons than protons. However, since electrons have a -1 charge, the overall charge of the object would be negative 18 or -18.
Silk and static electricity
January 12, 2017
How does silk affect static electricity? If it doesn't, why not?
Connie - USA (27800)
Silk tends to give up electrons or gain positive charges. That means it would be attracted to materials that attract negative charges. See the list on Materials that Cause Static Electricity.
Paperback spine labeling
January 11, 2017
I am trying to find out what is the correct "spine labeling" for a paperback book? Sould it just be "Fic, Mar" or should it be "Fic, PB, Mar"?
Linda - USA (27796)
If you are publishing a fiction paperback book, you should include the title, author, and publisher on the spine. See Book Cover Elements.
I assume "Fic" means fiction and "PB" means paperback, but I don't think you necessarily need that on the spine. Look at various paperbacks in the bookstore to get an idea of what is needed.
Best wishes for success in your writing.
Convert mega Hz to peta Hz
January 8, 2017
How to convert from mega Hertz to peta Hertz and vice visa
Susan - Nigeria (27792)
Mega stands for million or 10^6. Peta stands for 10^15.
To convert from mega Hz to peta Hz, You divide by 10^9. To go the other direction, you multiply by 10^9.
January 6, 2017
Good morning Ron,
With a growing interest among college students to educate themselves about their unique financial situation, I thought the School for Champions might benefit from the information in our newly published 'Survival Guide to Personal Finance for College Students' — https://www.annuity.org/financial-literacy/students/. This piece - written by our Financial Literacy team at Annuity.org, provides tips for students on how to manage their finances before, during and after college. It explores questions such as “When Should I Fill Out My FAFSA?”, “How Do Student Loans Work?” and “Should I Consider Early Investing Options?”
We thought by reaching out to y'all, we could further the education about this important issue and hopefully help students feel financially secure as they enjoy the college experience. I hope you consider sharing this important resource for students with questions about their personal finances on your School of Champions' 'Personal Finance Resources' page.
Meghan - USA (27791)
Thanks for the suggested resource. I added it to our Personal Finance Resources page.
Efficiency of a screw jack
January 5, 2017
A screw jack is being used to support the axle of a tractor,the load on it being 2.4 KN.The screw jack has an effort of effective radius 200 mm and a single-start square thread,having a load of 5 mm.Determine the efficiency of the jack if an effort of 60 N is required to raise the tractor axle.
DAASI - Ghana (27787)
Efficiency is the output work divided by the input work. Work is defined as the force times the distance moved.
The input force is 60 N and the output force is 2.4 KN. According to your configuration, you need to determine how far the input and output forces move to determine the work ratio.
Increase mechanical advantage in simple machine
January 4, 2017
How can mechanical advantage of simple machines be increased
mercy sharleen - Uganda (27782)
It depends on the type of simple machine. In a lever, you can change the distance from the fulcrum to change the mechanical advantage. See Mechanical Advantage Relationships
Animal and plant groups
January 4, 2017
1. 10 animal groups
2. 10 plant groups
Jesus Ramon Neopolo - USA (27783)
We have a universal soul
January 3, 2017
My belief on "Do humans have a soul" is that all humans are born into one shared soul or spirit, and our behavior may be from our genetics and learned behavior combined. You can also teach yourself new behavior with concentration of your brain when and if our brain is mature enough.
Amorita - USA (27781)
There are a number of religions that believe there is a universal soul that everyone is part of. In such a case, that spirit or soul is having many human experiences.
Yes, behavior comes from genetics and learning. That could explain bad behavior independent of the soul.
Correction on Rosa Parks
January 2, 2017
Rosa Parks did not sit in the white section. Whenever there were not any seats left in the white section, African Americans had to give up the seats in their section of the bus. She refused to move from the seat assigned to African Americans...not the seat assigned to white people. Please check and correct this. Thank you.
Tabitha - USA (27778)
Thanks for setting the record straight. I corrected the material at Start the Fire Facts - 1956 - Alabama.
Hears constant noises in house
January 2, 2017
This is completely a shot in the darkbut you just miight be able to help. I hear a constant 24/7 noise in my small home like a low density generator or a car idling. It never changes volume and never stops night and day. By turning off all of my power, it is still there. I dont hear it outside or in the neghbours home. It is driving me crazy,and although electricinas have had a look around they can't identify the source and in fact nobody else has heard it as yet. Believe me, I am not imagining it, and I get so upset when ask others if they can hear it and they can't but you really need to be here for a considerable while before it would be noticeable to you, its more like a background noise. Who could I get to try to discover the source. I live in a smallish New Zealand Town. Is there someone who I could get to test around the place etc for noise. Many thanks.
BARBARA - New Zealand (27779)
I'm sorry to hear you have that problem with annoying background noise. It is difficult to pin down the source of the noise. Here are some thoughts on the matter:
In our house, we can hear the din of road noise from cars driving on a road about a block away. We can't hear the noise outside but can hear it in the house. It is like it focuses to the house.
High power electrical lines can have a constant buzz. However, you would also hear them outside and at your neighbors.
Is it possible there is some water running through city sewer pipes that are near your house and can cause some noises?
I don't know if those ideas will help, but I hope you can solve your noise problem.
How is Braille used to extend vision?
January 2, 2017
How does Braille extend the sense organ?
Meg - Jamiaca (27780)
Braille is primarily used by those who are blind or have every poor vision as a way to read written material. It could be considered a "device" that extends the ability to read. However, it does not extend vision or the ability to see.
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