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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 14736 letters have been answered.



List of most recent 15 letters

Title

Subject

Country

Website is really nice Thanks USA
 
Raising temp of 5 lb of water from ice to 82 degrees Physics USA
 
Is slang like a verbal virus? Communication Uganda
 
Which needs to expend more fat to stay warm? Physics Kenya
 
Risks in using a transformer Physics South Africa
 
Want to learn more about speaking Speaking USA
 
Suggested finances resource Finances USA
 
Suggested resource InDesign USA
 
Experiment with Van de Graaff generator Physics Canada
 
Why does my VHF radio cause the voltage tester to go on? Physics Canada
 
Grades and school report Grades UK
 
How can I become a scientist? Physics South Africa
 
Why don't electrons repel each other in orbit? Physics Pakistan
 
Memory goes off when taking a test Grades Kenya
 
How does force and distance affect motion? Physics Philippines
 

Next 15 letters


Website is really nice

Thanks

October 20, 2014

Question

I'm not that much of a online reader to be honest but your site is really nice, keep it up! I'll go ahead and bookmark your website to come back in the future. All the best

matt - USA (25461)

Answer

Thanks for the comment. Best wishes for success in your endeavors.

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Raising temp of 5 lb of water from ice to 82 degrees

Physics

October 19, 2014

Question

raising temparture of water in btu

question . 5 lb of ice at 32 degrees how many btu to raise water temp to 82 degrees.

please help me with this .I thought answer would be 720 btu is this
correct?

david - USA (25458)

Answer

It takes 144 BTU to melt a pound of ice. Thus 5 X 144 = 720 BTU to melt 5 lbs of ice.

But also, it takes 1 BTU to raise the temperature of 1 lb of water 1 degree F.

Once the ice is melted, it would take an additional 5 x 50 BTU to raise the temp of 5 lb of water from 32 to 82 degrees.

Thus, the answer should be 720 + 250 = 970 BTU.

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Is slang like a verbal virus?

Communication

October 19, 2014

Question

Are slangs also considered as verbal viruses?

Eudu - Uganda (25459)

Answer

The expression "verbal virus" is actually a slang expression. Verbal virus really means a meaningless filler word--such as "um" or "ah"--that a person will habitually use.

Slang is an informal expression that a group of people may often use.

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Which needs to expend more fat to stay warm?

Physics

October 16, 2014

Question

between a cow and a rat, which one will have to convert the greater fraction of its fat to stay warm on a day of extremely low temperature. explain

warsame - Kenya (25454)

Answer

Heat loss is a factor of surface area. A cow has greater surface area.

Insulation is a factor of hair or fur length. I think a rat has thicker fur than a cow.

For those two reason, it would seem that the cow needs to expend more energy or fat to stay warm.

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Risks in using a transformer

Physics

October 15, 2014

Question

1. what are the risks/problems of using DC and AC Transformers?
2. what does the two transformers used for? (DC and AC Transformers)

Tonia - South Africa (25450)

Answer

If you use the a transformer indented for lower voltages with a high voltage input, it could overheat or blow out.

Transformers are used to change the voltage to make it more usable.

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Want to learn more about speaking

Speaking

October 15, 2014

Question

I want to learn more about public speaking

Elvira - USA (25451)

Answer

You can look over our lessons. Also, a good place to start is through Toastmasters and by attending some local Toastmasters Club meetings. They provide a chance to learn speaking and to practice it.

Find a club in your area.

Best wishes in your public speaking.

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Suggested finances resource

Finances

October 14, 2014

Question

Hi Ron,

Shelby here from InvestingTips360. I was checking out your personal finance/investing resources today & noticed you shared an article from Motley Fool, 13 Steps to Investing.

I recently put together a list of 101 investing tips for my readers that has gotten some pretty good feedback, http://www.investingtips360.com/how-to-invest-in-stocks/.

Was curious if you'd be interested in adding it to your resource list?

Cheers,

Shelby - USA (25447)

Answer

Thanks for the resource. It has been added to Personal Finances Resources.

Best wishes with your endeavors.

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Suggested resource

InDesign

October 14, 2014

Question

Hello,

I absolutely love your sites mission, it's always refreshing to see such passion for facilitating learning. I was curious if you still regularly update the indesign resource list found here http://school-for-champions.com/indesign/resources.htm. If so I have a resource visitors to your site should find useful.

I work with http://www.agitraining.com/ who provides both classroom and online training courses for Indesign as well as photoshop and web design. If it would be possible to get a link posted on your resources page or you need anymore information please let me know! Looking forward to hearing from you!

Best Regards,

Owen - USA (25448)

Answer

Thanks for the comments and suggested resource. I added a link to AGI Training from the InDesign Resources page.

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Experiment with Van de Graaff generator

Physics

October 13, 2014

Question

This is a question regarding static electricity. here is my theory question scenario: Take a van de graff ball, and attached a long insulator to either case 1 the ball (positive charge) or case 2 the lower electrode (negative charge). With either case if I took the insulator and submerged into water (with the generator still running to generate charge) would the static charge remain on the insulator in any of the cases or would the water absorb the charge before there could be a build up of charge. I am not going to try this out that is why I am asking.

Thanks!

Owen - Canada (25446)

Answer

That sound like an interesting experiment. My thoughts on it are as follows:

An insulator can collect electrical charges on its surface like from a Van de Graaff generator, but it doesn't really conduct the charges like a metal wire would do. Pure water is also an insulator. Slightly salty water will conduct electricity.

If you submerged the insulator in water, and it had a collection of charges on its surface, most of the charges would probably be released into the water.

I don't think it would be dangerous to try this, since a Van de Graaf generator puts out high voltages but very low current.

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Why does my VHF radio cause the voltage tester to go on?

Physics

October 11, 2014

Question

I had my 12 volt tester layer on my truck seat I noticed that every time I keyed the mike on my vhf radio the light on the tester would come .i am curious to know why.

Randy - Canada (25440)

Answer

The EM waves from your VHF radio must be powerful enough and at the right frequency to get picked up by your volt tester.

I had a similar experience where I would hear talking on my home radio speakers, even when the radio was unplugged. I found out that the fellow living downstairs had a powerful (and illegal) CB radio, and my speakers picked up the EM waves when he transmitted.

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Grades and school report

Grades

October 11, 2014

Question

HI , HOW CAN I GET GOOD GRADE AND A GOOD SCHOOL REPORT?
LOOKING FORWARD FOR YOU REPLY
FAIZA

faiza - UK (25441)

Answer

Go over the lessons in Getting Good Grades to help you.

Also, see Aid for Writing a Book Report to help you start a report.

Best wishes on success in school. You know you can do it.

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How can I become a scientist?

Physics

October 10, 2014

Question

what can i do to become a scientist one day ?

lusands - South Africa (25438)

Answer

You have set a good goal to achieve. Write that down on a paper as a reminder.

Be curious and study the various parts of the sciences, especially those that really interest you. Let your science teachers know of your ambition, and they will help your achieve your goal.

You need to graduate from college with a degree in the science of your choice. Then you can get a job as a scientist or get an advanced degree and work in a university.

Best wishes on becoming a scientist.

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Why don't electrons repel each other in orbit?

Physics

October 10, 2014

Question

electrons are charged negatively charged particles as like charges repel each other then how electones are moving in an orbital why they dont repel eachother.

Moon - Pakistan (25439)

Answer

Electrons in the orbits or shells of an atom are separated, so to an extent they do repel each other. But a bigger question is why the negatively charged electrons do not fall into the positively charged nucleus.

The reason for both situations is that in very close distances--like with an atom--the Quantum Theory takes effect and properties at greater distances do not hold.

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Memory goes off when taking a test

Grades

October 8, 2014

Question

I Am Boor In Mathemathics What Can I Do To Improve My Crade?And I Have A Problem That I Am Studying Well But When It Come To Exams My Memory Goes Off

Geoffrey - Kenya (25434)

Answer

Part of your studying should be practicing taking tests. In this way, you will not get as nervous or forgetful during a test.

But also, you need to prepare well for a test.

See Be Good at Taking Tests, as well as other lessons on getting good grades.

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How does force and distance affect motion?

Physics

October 7, 2014

Question

Explain how force and distance effect motion?

Maribel - Philippines (25432)

Answer

A force is what can cause an object to move. It is a push or pull. While the force is acting on an object, that object will accelerate or increase its velocity. One the force stops, the object can continue moving, unless slowed down by another force.

In most cases, a force is in direct contact, although some forces--like gravity--can act at a distance.

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