Homework Help!

[Petie]

Friction is a little more involved than I remember how to do off the top of my head when you need to calculate it but in this case, it just means there's another force, parallel to the ground in the direction opposite of the motion, of 25 N so just factor that into your FBD and re-calculate accordingly.

[Psychospacecow]

Many thanks.

[Ghost Nappa]

What are some differences and similarities between static electricity and current electricity? I need at least three.

EDIT: too late, I already submitted my assignment and forgot to answer that question. I'd still like to know though.

[Psychospacecow]

What are some differences and similarities between static electricity and current electricity? I need at least three.

EDIT: too late, I already submitted my assignment and forgot to answer that question. I'd still like to know though.

http://wiki.answers.com/Q/What_is_differ...ity#slide1

Will this suffice?

[Arjahn]

So I need an idea for an article I can write in the skoo' paper, anyone got anything good?

[Psychospacecow]

What we've learned from history and how you can apply it.
The nature of groups and why your average jock is no better than a wolf in a pack.
Promoting VGFacts.
How to get an incredibly distracting signature that distracts people with its epicness as they type.

[Psychospacecow]

Just in advance, I'm probably going to be using this a lot again if people will answer. I won't at the immediate moment because I'm given up for today, as I've spent 3+ hours on two questions and it is currently 12:19 AM.

[Psychospacecow]

How have lenses been used to change the world?
Lenses have played an instrumental role in the advancement of society. In this article, we will highlight three select examples, but we encourage you to look more into it if the topic intrigues you.
To start things off, let’s draw attention to something a little close to home. I’m talking about corrective lenses. I’m sure some of the people reading this have them, and they can tell you it’d be difficult to read this otherwise. Corrective lenses come in many forms. This can include contact lenses, glasses, and a lens which can be surgically implanted, which is called an intraocular lens. Lenses have improved the vision of those who would otherwise not see, and for that we thank them.
Have you ever just stared out into the sky and just wondered? Well, The Netherlands came through when a couple of 17th century men named Hans Lippershey, Zacharias Janssen and Jacob Metius of Alkmaar invented the refracting telescope. Galileo Galilei improved upon the design soon after. When man first gazed upon the extraterrestrial canvas of space, the desire to explore and understand it overwhelmed him. We thought that Earth was the center of everything, the world was flat, and the sun rotated around us. Upon the advent of telescopes, we found ourselves gazing upon the stars as those before us, but there now existed a clarity unheard of previously which allowed us to dispel our previous misconceptions and again fueled our desire to reach beyond the cradle of humanity, Earth.


This is an article I am writing. I've still got one more paragraph to write, and I'm probably going to use cameras, but if anyone has a better idea for lenses, I'd appreciate it. Also, I'm posting this for opinions.

[SERIOUSLY THOUGH*]

How have lenses been used to change the world?
Lenses have played an instrumental role in the advancement of society. In this article, we will highlight three select examples, but we encourage you to look more into it if the topic intrigues you.
To start things off, let’s draw attention to something a little close to home. I’m talking about corrective lenses. I’m sure some of the people reading this have them, and they can tell you it’d be difficult to read this otherwise. Corrective lenses come in many forms. This can include contact lenses, glasses, and a lens which can be surgically implanted, which is called an intraocular lens. Lenses have improved the vision of those who would otherwise not see, and for that we thank them.
Have you ever just stared out into the sky and just wondered? Well, The Netherlands came through when a couple of 17th century men named Hans Lippershey, Zacharias Janssen and Jacob Metius of Alkmaar invented the refracting telescope. Galileo Galilei improved upon the design soon after. When man first gazed upon the extraterrestrial canvas of space, the desire to explore and understand it overwhelmed him. We thought that Earth was the center of everything, the world was flat, and the sun rotated around us. Upon the advent of telescopes, we found ourselves gazing upon the stars as those before us, but there now existed a clarity unheard of previously which allowed us to dispel our previous misconceptions and again fueled our desire to reach beyond the cradle of humanity, Earth.


This is an article I am writing. I've still got one more paragraph to write, and I'm probably going to use cameras, but if anyone has a better idea for lenses, I'd appreciate it. Also, I'm posting this for opinions.

Just to say that you write well.
Also if you need a proof-reader, I'd be glad to look over your paper :)

[Psychospacecow]

It'd be appreciated.

Here's what I have so far.

The
Ad-mirror-able History of Lenses

How have lenses been used to change the world?
Lenses have played an instrumental role in the advancement of society. In this article, we will highlight three select examples, but we encourage you to look more into it if the topic intrigues you.
To start things off, let’s draw attention to something a little close to home. I’m talking about corrective lenses. I’m sure some of the people reading this have them, and they can tell you it’d be difficult to read this otherwise. Corrective lenses come in many forms. This can include contact lenses, glasses, and a lens which can be surgically implanted, which is called an intraocular lens. Corrective lenses have changed the world by letting us see it as we previously could not.
Have you ever just stared out into the sky and just wondered? Well, The Netherlands came through when a couple of 17th century men named Hans Lippershey, Zacharias Janssen and Jacob Metius of Alkmaar invented the refracting telescope. Galileo Galilei improved upon the design soon after. When man first gazed upon the extraterrestrial canvas of space, the desire to explore and understand it overwhelmed him. We thought that Earth was the center of everything, the world was flat, and the sun rotated around us. Upon the advent of telescopes, we found ourselves gazing upon the stars as those before us, but there now exists clarity unheard of previously which allowed us to dispel our archaic misconceptions and again fueled our desire to reach beyond the cradle of humanity, Earth. Telescopes, and by extension lenses, have changed the world by pushing us beyond it.
Finally, we’re closing off with something close to my heart. As a photographer, the camera is part of my profession and my life. These devices utilize lenses for different varieties of exposure, zoom, and act as a fundamental part of the system. You can find them on phones, professional rigs, handheld gaming devices, and computers. History, family, wars, art, and everything in between have been encapsulated into a picture format since around The Civil War of The United States. Cameras, and by extension lenses, have changed the world by recording it.





Image Portfolio



The image above demonstrates refraction. Refraction is the bending of light. This image demonstrates refraction via the use of a lens. If you look at the tomato or coconut husk, the parts outside of the mirror do not match up. That is what refraction looks like. The image was created using a camera, a lens, an my home.



The image above demonstrates real image reflection.
You are at or beyond the focal point, so the image is inverted. Therefore, it is a “real” image.
This image was created in a Cinco Ranch School Lab Room with a lens and a camera.



The image above displays Virtual Image Reflection. It is upright and appears before the focal point, and that therefore dictates that it is virtual. This image was taken at my home.

[SERIOUSLY THOUGH*]

Here you go !

These are just recommendations, so pick and choose what you like.

The Ad-mirror-able [Oh damn he went there] History of Lenses

How have lenses been used to change the world?

Lenses have played an instrumental role in the advancement of society. In this article, we will highlight three select examples (though if the topic interests you, we encourage you to look more into it).

To start things off, let’s draw attention to something [ ‘a little’ would have required the comparative ‘closer’] close to home. I’m talking about corrective lenses. I’m sure some of those who are reading this have them and can tell you it would be difficult to read without their help. Corrective lenses come in many forms : Contact lenses, glasses, and intraocular lenses, which are surgically implanted, just to name a few. Corrective lenses have changed the world by letting us see it in a way that was previously impossible.

Have you ever just stared up into the sky and wondered? Well, the Netherlands came through when three 17th century men, Hans Lippershey, Zacharias Janssen, and Jacob Metius of Alkmaar, invented the refracting telescope. Galileo Galilei soon after improved upon their design. When man first gazed upon the extraterrestrial canvas of space, his desire to explore and understand it was overwhelming. We thought that Earth was the center of everything, the world was flat, and the sun rotated around us. With telescopes, we could now gaze upon the stars much like those before us, though with an unprecedented level of clarity. This allowed us to dispel our archaic misconceptions and again fuelled our desire to reach beyond the cradle of humanity. Telescopes, and by extension lenses, have changed the world by pushing us beyond it.

Finally, we’re closing off with something close to my heart. As a photographer, cameras are part of my profession and my life. These devices utilize lenses for various levels of exposure and zoom, and act as a fundamental part of the system. You can find them on phones, professional rigs, handheld gaming devices, and computers. History, family, wars, art, and everything in between have been encapsulated into picture format since around the Civil War of the United States. Cameras, and by extension lenses, have changed the world by recording it.





Image Portfolio

[Image: mEl3bpw.jpg]

The above image demonstrates refraction. Refraction is the bending of light. This image demonstrates refraction via the use of a lens [Could merge into first sentence?]. If you look at the tomato or coconut husk, the parts outside of the mirror do not match up. That is what refraction looks like. The image was created at home using a camera and lens.

[Image: JEnD4nC.jpg]

The image above demonstrates real image reflection.
You are at, or beyond, the focal point. The image therefore appears inverted. It is a “real” image.
This image was created in a Cinco Ranch School Lab Room using a camera and lens.

[Image: AeF1SoT.jpg]

The image above displays Virtual Image Reflection. It is upright and appears before the focal point, thereby dictating that it is virtual. This image was taken at my home.

[Psychospacecow]

Many thanks Seriously. I really appreciate this.

[Psychospacecow]

Anyone know any notable German people or inventions that are good? (I need to write a paper for my German Class, and I sure as heck am not about to write about any crazy Austrian painters)

[CosmykTheDolfyn]

Karl Benz: invented the gasoline powered car.
Hans Berger: invented the EEG, the most common method of scanning brain waves.

[Psychospacecow]

I went with Ernst Boris Chain.