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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 16106 letters have been answered. They are listed according to date.

You can read them to further your understanding of the subjects.



List of most recent 15 letters

Title

Subject

Section

Country

Resources helpful Education India
 
Person sending me noise Mental Health USA
 
Using roller skates in spaceship Gravity USA
 
Getting good grades Machines USA
 
Friction on Inclined Surface Friction Canada
 
Leyden jar Electricity Nigeria
 
Resolve components Physics Nigeria
 
Dark Matter SfC New Zealand
 
Reducing friction Physics USA
 
Pendulum and harmonic motion Motion Tanzania
 
Characteristics of the Moon Astronomy India
 
Speed of sound inside aircraft Sound USA
 
Calculating simple pendulum Physics Motion Nigeria
 
Lazy eye History USA
 
Question Flash USA
 

Next 15 letters





Resources helpful

Education

January 21, 2020

Question

Your Education Resources page was super helpful for me when I was recently searching for some educational resources as, so I wanted to return the favour.

Also, I wanted to let you know that I have a site related to astronomy, where I published some content that might make a nice replacement.

Here’s the link: https://www.galactic-facts.com

I hope this helps and keep up the awesome work!

Prem - India (29329)

Answer

I am glad the material was useful to you.

I added a link to your site from
https://school-for-champions.com/education/resources.htm

and

https://www.school-for-champions.com/astronomy/resources.htm

Best wishes for success in your work.

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Person sending me noise

Mental Health

January 14, 2020

Question

A person is putting a noise around me all the time, in my car. In my apt. And especially after I have eaten. The purpose is to put me to sleep or make me unconscious. I need to record these sounds for proof or evidence that this is happening to me. what to do ?

Learline - USA (29319)

Answer

Do you have any idea who this person is that is sending you these sounds? Why would the person do this?

Also, it is possible that they are internal sounds caused by problems in your inner ear, similar to Tinnitus.

A good place to start is be getting a checkup from your doctor. Also, try to identify the person.

Best wishes in solving this problem.

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Using roller skates in spaceship

Gravity

January 13, 2020

Question

if the astronaut had roller skates on and was felling the effects of artificial gravity since the wheels are in contact with the outer shell, whould he stay in one place since the wheens would be turning?

art - USA (29317)

Answer

That is a good question.

If the roller skates had magnetic wheels, such that they would keep the astronaut in contact with a steel outer shell floor, he could skate around the outer shell.

If he went in the direction of rotation, it would slightly increase the feeling of gravity, while moving in the opposite direction would decrease that feeling. However, the effect would be negligible since his velocity would be small.

I updated the Artificial Gravity in Spacecraft page to reflect information about using skates.

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Getting good grades

Machines

January 9, 2020

Question

is to get GOOD GRADES

juan - USA (29315)

Answer

See: Getting Good Grades for more information.

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Friction on Inclined Surface

Friction

January 8, 2020

Question

So, what you are saying is that the coefficient of static friction on an inclined surface is greater than on a flat surface?

Urooba - Canada (29313)

Answer

Sorry for the confusion.

The coefficient of static friction on an inclined surface equals that on a flat surface.

I've updated Static Sliding Friction on an Incline to clarify the issue.

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Leyden jar

Electricity

January 8, 2020

Question

What is the meaning of foil, and how can i find leyden jar

Andara - Nigeria (29314)

Answer

A Leyden Jar is simply a glass container that has aluminum foil on the inside and outside. It is also a form of capacitor.

See: Storage of Electrical Power for more information.

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Resolve components

Physics

January 2, 2020

Question

How can I get your materials, how can I know how to resolve component, the understanding

Okesanjo - Nigeria (29306)

Answer

What are you trying to do concerning this subject?

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Dark Matter

SfC

December 28, 2019

Question

Hi Ron - hope you got my previous message - would really love to hear from you in regard to things you have written about dark matter and Bohr model. Just want you to know I am genuine - not a crackpot - although my wife would tell you differently ! I have a Phd but have been in and out of science a bit like yourself and am now a school teacher . Im in New Zealand, have published papers (Biology/genetics) - a long time ago. I have a burning issue to discuss about dark matter which we seem to be on the same page about.
Look forward to hearing from you - Dave Nicol

David - New Zealand (29303)

Answer

I'm in the process of updating material I have on Dark Matter. I'll let you know when I get things ready. Feel free to ask some questions. They could help with important issues.

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Reducing friction

Physics

December 20, 2019

Question

I'm doing a project to how to reduce friction, so how do you reduce friction?

sameera - USA (29300)

Answer

See Reducing Sliding Friction.

Also see Friction Experiments.

Best wishes for success in your project.

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Pendulum and harmonic motion

Motion

December 17, 2019

Question

Why simple pendulum is not simple harmonic motion

Moh'd - Tanzania (29297)

Answer

If the pendulum is let free at a small angle, its motion can be considered simple harmonic motion.

I added a sentence to state that fact in Equations for a Simple Pendulum.

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Characteristics of the Moon

Astronomy

December 15, 2019

Question

Phisical characteristics on the Moon

Sarat - India (29294)

Answer

Characteristics of the Moon include its distance from the Earth (384,400 km), diameter (3479 km), mass (7.35*10^22 kg), density (3340 kg/m^3), and temperature (107°C during the day and ?153°C at night).

See Characteristics of our Moon for more information.

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Speed of sound inside aircraft

Sound

November 21, 2019

Question

Disabled veteran with PTSD, my brain turned on at 5 a.m. today with the idiot question of what is the speed of sound inside an aircraft flying faster than sound. Wide awake now, I assume that the speed is relative to the enclosing vessel, and that the speed of the aircraft is essentially irrelevant. Except possibly at lightspeed ...

Karen - USA (29274)

Answer

That is a good question, and you are correct that the speed of sound inside an enclosed aircraft is independent of the aircraft's external speed.

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Calculating simple pendulum

Physics

November 20, 2019

Question

what is the method of calculating simple pendulum

MAUAN - Nigeria (29272)

Answer

You can measure the frequency that a pendulum swings with a stopwatch.

To calculate the frequency, you must measure the length of the rod or wire and use the equation: f = [SQRT(g/L)]/2PI.

(See Equations for a Simple Pendulum.

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Lazy eye

History

November 14, 2019

Question

Did you also know both Lincoln and Kennedy had a lazy eye? Just look at the pictures.

Linda - USA (29263)

Answer

Thanks for the interesting information.

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Question

Flash

November 7, 2019

Question

Learning builder options/settings. Recapture administrative role.

Jason - USA (29258)

Answer

I'm not sure what you are trying to do.

Unfortunately, Adobe Flash is not supported in many browsers. Thus, alternative applications are being used to create animations.

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Next 15 letters


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