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Each day readers send in questions and feedback concerning the various lessons in the School for Champions website. A total of 15435 letters have been answered.



List of most recent 15 letters

Title

Subject

Section

Country

Can I used compressed nitrogen to paint a boat? Chemistry USA
 
Creating charges with a plastic rod Static Electricity USA
 
Is number 4 is variable term? Algebra India
 
Solids used to obtain oxygen gas Chemistry Kenya
 
Mechanical advantage greater than 1 Machines Nigeria
 
Communication in ads Communication France
 
Coefficient of friction on an incline Physics Friction India
 
Want to improve grade from F to A Physics South Africa
 
Dog getting eyes removed Animal Health USA
 
Suggested aging resource Aging USA
 
How to get money on PayPal Finances Philliphines
 
Uses of harps in physics study Physics Sound Uganda
 
Factors that affect your character Character USA
 
I need advice on how to pass physics Physics USA
 
Like what you're doing Thanks USA
 

Next 15 letters


Can I used compressed nitrogen to paint a boat?

Chemistry

April 29, 2016

Question

Hey there, I am Nelson from Nautiques Boat Care. My question is can I use it nitrogen as a substitute to regular air pressure when I spray the paint or gel coat to avoid moisture?

Jose - USA (26971)

Answer

Since air is made up of 80% nitrogen, using compressed nitrogen to spray the paint. Besides nitrogen and oxygen, air also includes water vapor.

However, compressed nitrogen probably would be more expensive than compressed.

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Creating charges with a plastic rod

Static Electricity

April 28, 2016

Question

Great article on static electricity materials. How about plastic?

Can I generate and maintain a good charge rubbing nylon or a paper product on a plastic rod. Or would it have to be a plexiglass rod?

Trying to find the best, simplest, cheapest, least breakable way to charge nylon or paper and have it hold its charge a while.

Thank you.

Tony - USA (26970)

Answer

Plexiglass is a form of acrylic plastic, but it is harder than normal acrylic and is easier to drill and cut without breakage.

A plastic rod should work just as well as a plexiglass rod.

A good experiment would be to compare the effectiveness of each.

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Is number 4 is variable term?

Algebra

April 27, 2016

Question

1. Is number 4 is variable term? If yes, how?
2. Are all constants are variables? if yes, how?

srilata - India (26968)

Answer

The number 4 is a constant value. "Constant" means the item does not vary. "Variable" means that it can change. Usually, variables are designated by letters.

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Solids used to obtain oxygen gas

Chemistry

April 27, 2016

Question

Name two solids that can be heated to obtain oxygen gas.

Engneer - Kenya (26969)

Answer

Mercuric oxide (HgO), potassium chlorate (KClO3), and sodium peroxide (Na2O2)

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Mechanical advantage greater than 1

Machines

April 26, 2016

Question

When machanical advantage of a machine is greater than 1,what is the implication ? Is the machine a good machine or a bad machine ?

jimoh - Nigeria (26966)

Answer

You want the machine to have the force mechanical advantage to be greater than 1. That way you can lift a greater load than your effort.

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Communication in ads

Communication

April 25, 2016

Question

Hello,

My name is Robin and I'm French student in KEDGE BS in Marseille.

I'm really interested in communication and I would like to work in communication when I will be graduated.

I would like to have your opinion about two questions that I ask myself.

What are the components to succeed in communication and ads campaigns ?

How do consumer perceive ads and company communication ?

I would like to have a professional opinion that's why I contact you.

Hope to hear from you soon and I wish you a good day.

PS : Sorry If I have a bad english.

Thank you.

Robin

Robin - France (26964)

Answer

Ideally, an ad campaign is aimed at a specific audience, where you know their interests. Unfortunately, too many ad campaigns have no focus.

It is good to use the AIDA formula in ads. That is: get Attention, create Interest, encourage Desire for the product, and then have a call to Action.

Some ads can be appealing to the consumer, especially if they give useful information, or at the least are entertaining. However, I see so many ads and commercials on television where I am not sure what they are selling. That is annoying and wastes my time.

think of the ads and commercials you have seen and consider your opinion of their effectiveness.

I hope these ideas help. Best wishes for success in your studies.

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Coefficient of friction on an incline

Physics

April 24, 2016

Question

A wooden block of mass 8 kg slides down an inclined plane of inclination 30 degree to the horizontal with constant acceleration 0.4 metre per second square. The force of friction between the block and inclined plane is?

Pratiti - India (26961)

Answer

See Kinetic Friction on an Inclined Surface. It provides the equations needed to solve your problem.

I hope that helps.

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Want to improve grade from F to A

Physics

April 24, 2016

Question

hi, I would like to improve my physical sciences grade from F to A but I struggle in understanding it so What must I do?

Siphumle - South Africa (26962)

Answer

It is good that you want to improve yourself. That is a big starting point.

Look at our lessons on Getting Good Grades for ideas in improving your study skills and test-taking ability.

You can also go through our Physical Science lessons is the areas you are studying. The lessons will give you the basics and help your understanding.

It might be good to tell your teacher that you would like to get better grades in class and ask for some suggestions. I am sure the teacher would be willing to help, if you show you want to excel.

I hope these ideas help. Best wishes in becoming a top student in your class.

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Dog getting eyes removed

AnimalHealth

April 24, 2016

Question

My Bassett hound just had his eye removed n is going to have the other eye removed in a week. He will not eat much n I can not get him to take his medications. Who can I do. He get stressed out witch only makes his eye swell more

Bonnie - USA (26963)

Answer

I'm sorry to hear that your dog is having such problems. I am sure it is stressful on both you and your dog.

Try to give the medications wrapped in a treat, such as meat or cheese. Eye drops can sting, so you have to hold the dog to give the drops.

Once both eyes are removed it should be a relief from pain for your dog.

Our dog was able to get along fine after her eyes were removed. She was a happy dog for her remaining years.

Se Navigation for a Blind Dog for some tips.

Best wishes for the health of your Bassett Hound.

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Suggested aging resource

Aging

April 22, 2016

Question

Hi,

I notice that you’ve shared the StopFraud.gov page relating to elder fraud and I think that you might find our resource of interest https://upgradedpoints.com/how-to-prevent-credit-card-fraud/.

Senior citizens are heavily targeted by credit card fraud, our fraud hotspot map shows communities with ageing populations tend to unfortunately be targeted the most. I think our guide would prove to be a useful addition to your site.

If you are making updates to this page of your site, http://www.school-for-champions.com/aging/resources.htm, perhaps you could look to include our resource?

Best regards,

Andrea - USA (26959)

Answer

Thanks for the suggested resource. I added links at Personal Finance Resources and Healthy Aging Resources.

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How to get money on PayPal

Finances

April 21, 2016

Question

how to get money on paypal if u need cash ucan withdrew anywhere banknet,

nazareno - Philliphines (26953)

Answer

The best bet is to check PayPal and see the various choices you have for sending and receiving money. You can sign up for free.

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Uses of harps in physics study

Physics

April 21, 2016

Question

what are the uses and application of harps in physics

OPITO - Uganda (26954)

Answer

Harps can be used to study how vibrating a wire can create a sound and musical note. You can show how different thicknesses of wire create different musical sounds. You can also show how tightening the wire changes the sound.

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Factors that affect your character

Character

April 21, 2016

Question

What are the factors that affect your character positive and that affect your character negative?

Kgosietsile - USA (26955)

Answer

Character consist of learned behavior traits. You learn that it is beneficial to you to be honest, helpful, and conscientious.

But some people are taught to be dishonest, lazy, and such. They could be taught that from parents or friends. Having a reputation of negative character can result in losses. Often people with poor character traits learn to improve their character.

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I need advice on how to pass physics

Physics

April 21, 2016

Question

dear sir/madam

my name is innocentia I need advice on how to pass my physics. I failed my matric 2011 now rewriting my supplemntary 2016 june I tried to study seems like I don't understand a single thing same to maths really need help my exams are near.

Yours sincerel

NHLAPO - USA (26956)

Answer

You can go through the various Physics lessons in the various areas you are studying. They will give the basics that should help you understand the subject better.

Likewise, look at the lessons in
Arithmetic and Algebra for help in understanding those subjects.

Best wishes for success in learning the subjects and in your exams.

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Like what you're doing

Thanks

April 21, 2016

Question

Hi: Like what you're doing -- keep up the good work -- as a thank you, feel free to look at and use any of what you find at my website...www.lifesmith.com...take care, Jeff Berkeley

Jeff - USA (26958)

Answer

Thanks for the feedback. I plan to add some material on fractals in the math section, so your material would be useful.

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