# Kylee's Physics Blog

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## If You Are Lost In A Forest, Use Magnetism

Most people know that the compass is used to navigate yourself around. However most don't know how it works. A compass is a magnet that is free to line up with magnetic field lines. The earth is basically a giant magnet with a north and south pole. However, the north pole of a compass is attracted to the geographic north pole of the earth.. therefore the geographic north pole of the earth is a magnetic south pole. The compass is able to navigate you around earth when you are lost because of magn

## Making Toast and Physics

When you make toast in a toaster oven, you are using electrical power. Electrical power is the rate at which electrical energy is expended. The amount of electrical power your oven has is based on the amount of work it has to do and how much time it takes to make the toast. Toasters are measure in volts and they draw amps of current to work. The toaster is made up of a series of circuits. A circuit is a closed loop path through which current can flow. If a loop in the toaster oven somehow gets a

## Sound Waves in the Library

When a librarian hears someone talking they tell them to be quiet. What is happening is they are hearing sound waves. Sound is a mechanical wave observed by detecting vibrations in the inner ear. Sound can travel across the library because sound can travel through air, water, wood and even steel. The waves that are produced when you talk are longitudinal waves. The speed of sound in air at STP is 331 m/s. So when you talk, it gets to the librarians very quickly. The sounds you make all have diff

## Hamsters Surfing on Waves

If a hamster were to go surfing (which they couldn't do in Hawaii because hamsters are illegal there) then they would be surfing on waves. Waves are created from several pulses at regular time intervals and they carry energy. A pulse is a single disturbance which carries energy through a medium or through space. If a hamster was surfing and the wave reached a boundary such as rocks, it would reflect off the boundary and it would be inverted. However if the wave were to reach a soft or flexible b

Basketball has so much to do with physics! First off when you dribble a basketball, the force you put on the basketball, the basketball puts back on you. When you shoot a basketball its projectile motion. The ball goes is attracted to the ground because of gravity. Your shoes (hopefully) do not slip on the ground when you are running because of friction. When you fall and get a floor burn that is also due to friction and so painful. The amount of force you apply to the ball and the angle and loc

## Cute Hamster

This is a cute hamster and gravity is acting on him and when he runs in a wheel the force that keeps him from flying off is centripetal acceleration. This hamster is not magnetic. This hamster is also not a conductor of electricity. This hamster is still really cute though. This hamster is made up of atoms. Matter is made up of atoms. If you want to truly experience all aspects of physics buy a hamster.

## Hamsters and Energy

Hamsters have tons to do with physics. Their food has chemical potential enegy and they eat it. If you drop a hamster (which I do not reccomend) the total mechanical energy will remain the same. When a hamster runs on its wheel it creates thermal energy. As a hamster falls freely, the kinetic energy will increase and the potential energy will decrease. When a hamster is running if it doubles its speed the kinetic energy of the hamster will be quadrupled. A hamsters gravitational energy depends o

## Momentum and Hamsters

Total momentum of a system is constant. When two hamster balls collide, the momentum is conserved. A collision is an event in which two or more objects approach and interact strongly for a brief period of time. If a 4 kilogram hamster with a velocity of 2 m/s collides with another hamster who is 3 kilograms and has a velocity of 5 m/s they would have 23 kg*m/s. After the collision however they still have the same amount of momentum because momentum is conserved. Initial momentum equals final mom

## Pepper and Work

The amount of work you do varies person to person, or person to hamster. You do work on an object when you move it. Work is the process of moving an object by applying a force. If I push my hamster, Pepper, 3 meters and apply a force of 2 newtons, then the work I did is 6 joules, since work is force multiplied by displacement. However when I apply the force of 2 newtons to pepper and she moves, it doesnâ€™t seem like she is impacting me, however she is also applying a force of two newtons back o

## Macaroni and Cheese Types of Energy

When you make Mac and Cheese you are coming face to face with many different types of energy. Energy is the capacity to do work or move an object. Energy can be transformed and this is proven when you make mac and cheese. The macaroni has chemical potential energy. And by using thermal energy the mac and cheese is cooked and energy is released. The macaroni is changed because of work energy. Work done on a system by external forces changes the energy system. Also if you hold a piece of macaroni

## Springs and Trampolines

When I think of springs, I think of trampolines. The more you stretch of compress a spring, the greater the force of the spring. If you think of a hamster jumping on a trampoline it wouldnâ€™t go as high as an elephant jumping on the trampoline. The larger the force, the larger the distance. Work done in compressing the spring is stored as elastic potential energy. Therefore if a large person jumps down on the spring when they fly back up the trampoline has potential energy to send them far up.

## 5 Hour Class

Last night Ally and I took our 5 hour class so that we will be able to take our road test and hopefully get our license. A lot of the things that have to do with driver safety are things we learned about in physics class. Every time the instructor would say something that has to do with physics Ally and I would be like omg no way. The first thing that had to do with physics was a video we watched. The video went over why it is super important to wear your seatbelt and talked about accidents that

## How Physics Relates to A School Day

Physics is involved in pretty much everything in life. Throughout my school day I experience all kinds of physics. First period I have Italian where I sit down (along with the rest of my classes) and I am applying a force to the chair and the chair is applying a force to me because of Newtons third law. Second period when I get my math test score back I hit my head against the desk which is also applying a force to the desk and the desk applies one right back. Third period is art class where I g