# This is my science study stack

It is a push or pull exerted on an object in order to change the motion of the object. It is measured in Newtons. Force
It is the use of force to move an object some distance. It is measured in Joules. Work
A disturbance that transfers energy. Wave
It is the solid, liquid, or gas material through which a wave can travel. Medium
The points where a wave is at its highest. Crest
The points where a wave is at its lowest. Trough
It is a wave where it vibrates in the direction that the wave travels. Longitudinal wave
Parts of a longitudinal wave that are pushed together. Compression
Parts of a longitudinal wave that are spread apart. Rarefaction
It is a wave where it vibrates perpendicular to the direction that the wave travels. Transverse wave
They are waves that require a medium. Mechanical waves
They are vibrations of electric and magnetic fields. They can travel without a medium. Electromagnetic waves
The measure of how far the vibration of a wave travels from the medium. Amplitude
The distance from any point on a wave to the next identical point on the same wave. Wavelength
The number of waves that pass a point in a given amount of time. Frequency
It is what frequency is measured in. Hertz
It is the speed a wave travels at. Wave speed
The ability to do work. Power
If you apply a force of 200 Newtons to lift a dog 5 feet, what amount of work will you accomplish? 1000 Joules
If 5000 Joules of work are needed to move a Prius 20 feet, what is the weight of the Prius? 2500 Newtons
If a wave is traveling 400 meters per second and the frequency of the wave is 200 Hertz, what is the wavelength? 2 meters
How would you use Newtons to find the amount of work needed to be done? You would multiply the Newtons by the distance that you are moving the object.
How do you you find Newtons if your force is in pounds. To convert pounds to Newtons, it is important that you multiply and not divide. You multiply the force in pounds by 9.81 to get your force in Newtons.
If you don't know what the amount of force an is object some distance but you know the distance you push it and the work being done is, how do you find the force needed to move the object? You divide the work being done by the distance that you are moving the object.
If you are trying to determine the amount of work that you need to perform to move a car 20 meters and the car is 3000 Newtons, how would you find the work needed to move the car? You would multiply the force by the distance to find work.
Based on what has been taught, how would you describe how to find power? First, you need to find the amount of work being done and the time it took to perform the work. You divide the amount of work performed by the amount time it took to perform the work. The quotient is the amount of power used.

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