Being a A+ student in Physics in my college didn't come from anywhere but my own strategy and hard work. During my basic physics classes i was bored and seemed a miss step in my career but then i found a easy way , a secret method actually to like, love and get the most in physics. So here i am to help you get started with physics and become a A+ student at it. Also for the secret, its somewhere in the texts beyond.
Physics :
It is what help us to understand our world better and to use this understanding for the benefits of people and environment. It involves the wide range of ideas and areas of investigations. It plays and important part in the the home, leisure, medicine and communication.
As with science it involves observations and experiments which are used to discover the relationship between things.
Who are the physicist ?
They try to make sense of relationships by developing theories and models. These theories are able to predict further behavior which can then be tested by experiments.
Physical quantities / Metric system
Note: Some people may think physics is really hard and confusing , that's right it is and that's what i still think, but remember its like a challenge and you need to refer this to real life situations and fight it to beat it. Just think it as a video game where you have evil bosses as formulas and equations and you are the ultimate formula killer etc.... have fun with something and you will learn. You know how i used to study ? . Well basically i wrote down a couple of problems in each A4 paper and then act as i am a super genius that is sent to earth to crack the most difficult equation. Then i used to make sounds say words and then solve and fall asleep. the next morning when it was exam time and the same kind of question appeared i was like " wow , it's time for super genius kid" hahah...sounds funny no ? ...but guess what i scored 20/20 in that exam , see what i mean ?...
System international Units - It is the standard system of units to measure all physical quantities , in other words the units in which the answer you write is gonna be in.
Length - Meter (m)
Mass - kilograms (kg)
Time - Seconds (s)
current - Ampere (a)
Temperature - kelvin (K)
Intensity - Candela (Cd)
Amount of substance - Mole (Mol)
Standard Prefix Multiplier
Tera - 10 * 12 ( * = power of)
Giga - 10 * 9
Mega - 10*6
Kilo - 10* 3
Centi - 10*-2
Milli - 10*-3
Micro- 10*-6
Nano - 10*-9
Pico - 10*-12
Peta - 10 *15
Femto - 10* -15
Exapmle 1 :
10 pM ----> M
10 x 10 * -12 m = This how you convert Pico Meter to Meter
Physics :
It is what help us to understand our world better and to use this understanding for the benefits of people and environment. It involves the wide range of ideas and areas of investigations. It plays and important part in the the home, leisure, medicine and communication.
As with science it involves observations and experiments which are used to discover the relationship between things.
Who are the physicist ?
They try to make sense of relationships by developing theories and models. These theories are able to predict further behavior which can then be tested by experiments.
Physical quantities / Metric system
Note: Some people may think physics is really hard and confusing , that's right it is and that's what i still think, but remember its like a challenge and you need to refer this to real life situations and fight it to beat it. Just think it as a video game where you have evil bosses as formulas and equations and you are the ultimate formula killer etc.... have fun with something and you will learn. You know how i used to study ? . Well basically i wrote down a couple of problems in each A4 paper and then act as i am a super genius that is sent to earth to crack the most difficult equation. Then i used to make sounds say words and then solve and fall asleep. the next morning when it was exam time and the same kind of question appeared i was like " wow , it's time for super genius kid" hahah...sounds funny no ? ...but guess what i scored 20/20 in that exam , see what i mean ?...
System international Units - It is the standard system of units to measure all physical quantities , in other words the units in which the answer you write is gonna be in.
Length - Meter (m)
Mass - kilograms (kg)
Time - Seconds (s)
current - Ampere (a)
Temperature - kelvin (K)
Intensity - Candela (Cd)
Amount of substance - Mole (Mol)
Standard Prefix Multiplier
Tera - 10 * 12 ( * = power of)
Giga - 10 * 9
Mega - 10*6
Kilo - 10* 3
Centi - 10*-2
Milli - 10*-3
Micro- 10*-6
Nano - 10*-9
Pico - 10*-12
Peta - 10 *15
Femto - 10* -15
Exapmle 1 :
10 pM ----> M
10 x 10 * -12 m = This how you convert Pico Meter to Meter
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Signing UpStep 1: Length
It is some thing we have learned in junior college or secondary schools, In physics definition it is the distance from one point to another , take a look at the diagram to get a feeling of what ii am talking about. To find length we basically measure with a ruler , a meter ruler, and ever if it's really long use a Mileometer. That's basically really easy and you don't need much to understand here.
Area
it is the amount of surface for an object. For regular shapes we use formula for each shape and for irregular shapes we use grids and the count out the number of grids inside the figure. Thats the final area of that shape.
Volume
It is the amount of space a object takes up. The volume of regular objects are calculated by using formula's and of irregular are is found by displacement of water.
Some example of formula's to calculate volume are :
Cube - l2
Cuboid - L x w x h
Prism - Base area x height
Cylinder - TTr2 x height
Cone - 1/3 TTr2 x height
Pyramid - 1/3 base area x height
Sphere - 4/3 TTr3
Volume of irregular object
The volume of irregular objects can be found by using displacement method, for smaller objects a cylinder can be used but for larger objects we use a special equipment called the Eureka Can.
.
Experiment time.
Get a old cylinder can like a tin or a measuring cylinder if you have one. Choose the different types of objects you wanna find the volume of and then fill the cylinder with water of about 250 ml or 150 ml. Place the object in the water and then note down the new volume reading on the cylinder.
Formula = Final Measuring - Initial measuring
your new measure - 250 or 150
explore more ways and try to make your own formula to find other ways to find volumes of objects.
Area
it is the amount of surface for an object. For regular shapes we use formula for each shape and for irregular shapes we use grids and the count out the number of grids inside the figure. Thats the final area of that shape.
Volume
It is the amount of space a object takes up. The volume of regular objects are calculated by using formula's and of irregular are is found by displacement of water.
Some example of formula's to calculate volume are :
Cube - l2
Cuboid - L x w x h
Prism - Base area x height
Cylinder - TTr2 x height
Cone - 1/3 TTr2 x height
Pyramid - 1/3 base area x height
Sphere - 4/3 TTr3
Volume of irregular object
The volume of irregular objects can be found by using displacement method, for smaller objects a cylinder can be used but for larger objects we use a special equipment called the Eureka Can.
.
Experiment time.
Get a old cylinder can like a tin or a measuring cylinder if you have one. Choose the different types of objects you wanna find the volume of and then fill the cylinder with water of about 250 ml or 150 ml. Place the object in the water and then note down the new volume reading on the cylinder.
Formula = Final Measuring - Initial measuring
your new measure - 250 or 150
explore more ways and try to make your own formula to find other ways to find volumes of objects.
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The concepts you are explaining are sdound and it looks like you understand the material, but to be honest your sentence structure and the general layout of this information is a mess. Try to write fewer run-on sentences- constrain a sentence to a conveying a single idea, and start a new paragraph when you change topic. (And yes, I know I'm terrible at overusing hyphens when I should break sentences; it's a terrible habit.)
For instance:
you would answer ohh...my weight is 71 kg , say that to a physics teacher or someone who knows it and they would laugh at you. Why ? because That means your 7.1 heavy or kg.
I am totally familiar with the concept of weight and mass and I can't follow this sentence. You also say "if your mass on earth is 710 N and on moon will mass the same 710 N." while explaining how Newtons measure weight (which changes with gravity) and kilograms measure mass, which doesn't.
You wrote
(Weight) is the gravitational pull on an object it is depended on the objects size and what it is made up of. Basically it means how much the power is used by the earths magnet to pull you. Units is Newtons (N).
Try
Weight is the force exerted on an object due to gravity. Weight, like any other force, is measured in Newtons (N). An object's weight depends on the object's mass and the value of gravity (10 Newtons per kilogram on Earth)
The "earth's magnet" part could be a useful analogy, though I'm not sure about that either, but here it's just confusing the matter (no pun intended).
While I appreciate the idea behind this Instructable, I don't think it will really help anyone who doesn't already know the subject. It could be good if rewritten in a more clear style, but as it is will probably just confuse people.
</constructive criticism>
L
In theory...
...but owing to measurement error and one of science's epic personality feuds, it's actually way off to point of being arbitrary.
All measurement is really the linking of the degree or scale of one natural phenomena to another e.g. time is linked to the motion of astronomical bodies.