Key words: Feedback Blog, answers to reader's questions, information, assistance, Ron Kurtus, School for Champions. Copyright © Restrictions
Each day readers send in questions and feedback concerning the various lessons in the School for Champions website. A total of 15160 letters have been answered.
|Should the force be inifinte is the separation is zero?||Physics||Gravitation||USA|
|What is the pressure for 20N force?||Physics||USA|
|Distinctive features unique to earth.||Astronomy||USA|
|Using a 220V fan in the US||Physics||Electricity||USA|
|How can I perform well in my science subjects?||Grades||Tanzania|
|Suggested animal health resource||Animal Health||USA|
|Suggested Mental Health Resource||Mental Health||USA|
|Can I get basic tutorials?||School for Champions||South Africa|
|Inertial and fictitious forces||Physics||Forces||USA|
|How does a lightning bolt occur?||Physics||Static Electricity||Uganda|
|University competitions for corporate sponsors||Competition||Nigeria|
|Audience analysis before presentation||Speaking||Ghana|
|Have not heard from Amazon yet||Publishing||USA|
|Demagnetise a magnet||Physics||Magnetism||Zambia|
Should the force be inifinte is the separation is zero?
September 28, 2015
How is it that if the distance between the 2 objects is zero that you can pull the objects apart. Hypothetically speaking the force between the 2 objects should be infinite if the distance between them is zero.
Karim - USA (26412)
The distance between objects is measured from their centers. Thus, since they have some size, and if they are touching, there still would be a separation.
If the particles were points, and they were touching, there separation would be zero and the force would be infinite.
One thing to note is that when particles approach an extremely small size, Quantum Wave Mechanics takes hold, and the particles become considered as waveforms. Different rules then apply.
What is the pressure for 20N force?
September 27, 2015
If force is 20N and area is 10cm^2 then what is pressure
- USA (26408)
Pressure is measured in N/m^2. So you will have to change cm^2 into meters squared.
100cm = 1m
m/100 = cm
m^2/10000 = 1cm^2
m^2/1000 = 10cm^2
Pressure = 20(1000)N/m^2 = 20000M/n^2
Distinctive features unique to earth.
September 27, 2015
What are 2 distinctive features unique to earth.
Plz get back to me soon.
Sarah - USA (26409)
Features of the Earth that are unique with respect to the other planets in our Solar System include an atmosphere and temperatures that can support life (as well know it) and oceans consisting of water.
Some of the other planets have atmospheres of other gases and temperatures either too high or too low to support life. Some have oceans but not made up of water.
September 27, 2015
conditions and heat transfer in the atmosphere
Gowon - Nigeria (26410)
See Heat Transfer on Earth for information.
Using a 220V fan in the US
September 26, 2015
I am moving from Cambodia to United States after spending sometime here. I bought a wall fan that I really liked and it operates at 220V 50Hz. The house I will be living in the U.S has a 220v wall outlet, I wanted to know the following:
Since there is 220V outlet, the voltage on the fan will be okay. True/False
Does it matter if I am running a 50Hz fan on a 60Hz?
Will it harm the rest of the electricity in the house? Is it safe?
Is it more expensive / less efficient to run a 220v/50Hz device then 110v/60Hz Device?
If you can share your knowledge I would really appreciated it.
Sam - USA (26405)
220V outlets in the house are usually used for stoves and electric clothes dryers. You may have to get a receptacle adapter. The 220V should be fine but at 60Hz, it may be running faster. I'm not sure if that would harm your fan. It would be good the check with the manufacturer.
It should not affect the rest of the house electricity.
Electrical cost is based on wattage, which is voltage times current. I think the power output (and cost) should be about the same for both devices.
How can I perform well in my science subjects?
September 26, 2015
How can i understood and perform well in my combination subjects (physics, chemistry & biology)?
David - Tanzania (26406)
Those courses require learning the basic concepts and using logical thinking. In other words, thing should make sense.
Physics probably will require knowledge of Algebra and ability to solve problems.
Read the material in your books, carefully and make notes about things you don't understand, so you can ask your teacher.
Also, take notes in class about important concepts the teacher mentions. Class notes will often help you when you study for your tests.
Sit towards the front of the class, so your teachers will know you are anxious to learn.
I am sure you will do well in your classes. Best wishes for good grades.
Suggested animal health resource
September 23, 2015
Hi there -
I was just browsing around your site today reading through some of the great info on there, and I found a broken link.
On this page, http://www.school-for-champions.com/animalhealth/resources.htm, this link is not working:
Also wanted to let you know about a sort-of replacement (it's about cats, not dogs) you might want to check out:
I think that it has a lot of useful info on the issue and how to treat it.
Either way I hope this helps and keep up the good work!
Leon - USA (26401)
Thanks for letting me know about the broken link. I removed that reference.
Also, I added your resource on cat fleas to the page. I plan to add some other material on cat fleas. I know that if you have a dog and a cat, and the cat gets fleas, the dog is sure to get the critters too.
Suggested Mental Health Resource
September 22, 2015
Did you know that there are almost 350 million people worldwide who suffer from depression (1)? Men, women and even children can fall victim to this mental health issue. What’s worse is that depression can lead to other devastating diseases including alcoholism, obesity and insomnia (2).
Depression isn’t something we can simply ignore – some of the people that we talk to every day may very well be battling this disease! To help spread awareness, I decided to create this list of resources, which offer advice that may be beneficial in treating this disease in addition to a professional healthcare regimen. Would you be so kind as to share these with your audience (perhaps you can include them here: http://www.school-for-champions.com/mentalhealth/resources.htm?)? Those who are struggling with depression need all of the support they can get. Additionally, I would be honored to write a research based article for your site on this subject free of charge.
How Stress is Threatening Your Health
Depression and Swimming
How Diet May Help Protect Your Mental Health
Taking Charge of Dual Diagnosis: Your Resource Guide
What Parents Can Do for Children Suffering from Social Anxiety Disorder
Service Dogs for Depression and Anxiety
I am truly thankful for your support in spreading the word on this very important topic!
My family’s health and happiness is my number one concern, and that is why I have shared this information with you. If you’d rather not hear from me in my attempts to spread awareness on important health and safety topics, please send me an e-mail to let me know.
Putting the Public Back in Public Health
340 S LEMON AVE #5780, WALNUT, CA 91789
Patricia - USA (26397)
Thanks for the suggested resources. I added them to Mental Health Resources.
Can I get basic tutorials?
September 21, 2015
Can I get basic tutorials on physical sciences and mathematics?
lerato - South Africa (26394)
You can go through our lessons on the various subjects. They are not tutorials, but they do give the basic information that can help you in your studies.
Inertial and fictitious forces
September 21, 2015
You have confused inertial and fictitious forces. An inertial force is mass times acceleration. It is a real force with a direction vector in the opposite direction of the acceleration. It is the resistance to acceleration you feel when you try to push a car to get it rolling, for instance. This is different from a fictitious or Pseudo force which is a force applied to an object for the purpose of calculating its path in an accelerating reference frame. As there is no force acting on the object, it is truly fiction. This is subtle for some but Newton was clear about the resisting force of mass.
Calvin - USA (26395)
Thanks for your input. I updated the information on inertial forces and some of the other lessons, as well as fixed the interface.
I plan to add a section explaining fictitious forces in the near future.
How does a lightning bolt occur?
September 20, 2015
how does a lightning bolt occur
budali - Uganda (26392)
See Static Electricity and Lightning for an explanation.
University competitions for corporate sponsors
September 19, 2015
Due regards. Please, can you simply summarize any of the competitions by giving illustrative examples of such competition that can occur in a university campus.... What exactly is that competition that can actually take place AMD attract a corporate sponsor....?
Toritseju - Nigeria (26390)
If your goal is to attract a corporate sponsor, You can have a competition between students in an area of interest to the corporation. For example, a technical company might be interested in sponsoring a science competition among the students. This would also be to the company's benefit to recruit science students.
Likewise, an investment firm might sponsor a competition concerning new business ideas.
Audience analysis before presentation
September 18, 2015
how does audience analysis ensure effective presentation?
collins - Ghana (26387)
The purpose and content of you presentation should be adjusted according to the interests and educational level of your audience. This is to make sure they are interested and understand what you are saying.
Although audience analysis will help your presentation, it will not ensure that it is effective. You still need to communicate your ideas and maintain their attention.
Have not heard from Amazon yet
September 17, 2015
i was approved approx 3 weeks ago vendor code RAKWM AND I HAVE NOT HEARD FROM YOU WITH MY FIRST ORDER TO GET STARTED
PAUL - USA (26385)
I have nothing to do with providing orders for your books. That is done through the Amazon Advantage Program.
Login with them to try to find the status of your orders.
Also, check to see if they have listed your title in their books for sale.
Best wishes on selling your books through their program.
Demagnetise a magnet
September 17, 2015
How can u demagnetise a magnet and how can u make a material to become a magnet eg iron?
peter - Zambia (26386)
There are demagnetizer devices that you can purchase. However, you can also remove the magnetic properties of a material by sufficiently heating it.
You can turn a piece of iron or steel into a magnet using electromagnetism. See Electromagnets for information. But note that soft iron will lose its magnetism fairly rapidly. Harder steel will hold onto its magnetism.
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