Introduction to motion in one dimension:-
When a object moves in a straight line, motion of the object is called as motion in one dimension.
This type of motion is also called as linear motion. For example, 1. A ball moves on a level road in straight Line, 2. A ball is thrown straight up, 3. Free falling bodies. One dimensional motion is the simplest motion in physics.
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Some definitions orf motion in one dimensions:
Displacement- the shortest distance between initial and final point is called as displacement.
Distance- the length of path travelled by object between initial and final points is called as distance travelled by object.
Speed – speed of object can be calculated by eq. - Speed = distance/ time.
Average speed- average speed is the average of all speeds attained by object during trip.
It can be calculated by eq. - average speed = total distance travelled / total time taken
Velocity- velocity of the object can be calculated by eq.- velocity = displacement / time
General Units of velocity is meter/second, kilometer/hour, miles/ hour. SI unit of velocity is meter/second.
Average velocity- average velocity of object can be calculated by eq. –
Average velocity = change in position / time interval
Acceleration- acceleration of the object is the rate of change of velocity. It can be calculated by eq.-
Acceleration = change in velocity / time interval
Uniform motion- when speed of the object is constant throughout one dimensional motion. Motion is called as uniform motion.
Non-uniform motion- speed in non-uniform motions is not constant and these motions have acceleration.
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Distance- time graph : Motion in one dimension
Distance- time graph in one dimensional motion is drawn between distance travelled and time. For uniform one dimensional motion this graph shows a straight line. Slope of line represents the velocity of motion. For non-uniform one dimensional motion, this graph shows a curve.
Wednesday, May 15
Thursday, May 2
Integrated Data Communication
Introduction to Integrated Data Communication:
Integrated Data Communications (IDC) is a Seattle-based integrator of wireless voice and data solutions for mobile devices and computers. IDC enable us to send and receive high-value data ubiquitously -- regardless of technology, device or network.
It is a technology which enables the transmission of data over digital wireless voice channels while not requiring changes to the existing network infrastructure.
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Concept of integrated data communication
Integrated data communications (IDC) is an application of telecommunications technology to solve the problem of transmitting data, especially to and from, or between computers. Generally, it is said that using integrated data communications one computer can “talk" with another computer.
IDC is intelligent wireless communications that integrate voice and data to support location-based and other high-value data applications and services on any wireless network or air interface. In present days this is easily used to communicate between two mobile devices.
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Example of Integrated data communication:
As we have shown above, the communication is done using a wireless network thus we easily say that the wireless data communication in the integrated mode is one of the examples of integrated data communication.
Wireless SCADA systems are one of the good examples of this communication. These systems usually operate over wide geographical area; country, province, large city, district, etc. These systems shall preferable operate as stand alone and well "isolated" from other communication networks, which may be vulnerable to overloading, interference, interruption of service, security attacks, fraud, etc. The data communication rates of SCADA is in the range of 1200 bps up to 9600 bps.
Integrated Data Communications (IDC) is a Seattle-based integrator of wireless voice and data solutions for mobile devices and computers. IDC enable us to send and receive high-value data ubiquitously -- regardless of technology, device or network.
It is a technology which enables the transmission of data over digital wireless voice channels while not requiring changes to the existing network infrastructure.
Is this topic Alternate Current hard for you? Watch out for my coming posts.
Concept of integrated data communication
Integrated data communications (IDC) is an application of telecommunications technology to solve the problem of transmitting data, especially to and from, or between computers. Generally, it is said that using integrated data communications one computer can “talk" with another computer.
IDC is intelligent wireless communications that integrate voice and data to support location-based and other high-value data applications and services on any wireless network or air interface. In present days this is easily used to communicate between two mobile devices.
Having problem with center of mass equation keep reading my upcoming posts, i will try to help you.
Example of Integrated data communication:
As we have shown above, the communication is done using a wireless network thus we easily say that the wireless data communication in the integrated mode is one of the examples of integrated data communication.
Wireless SCADA systems are one of the good examples of this communication. These systems usually operate over wide geographical area; country, province, large city, district, etc. These systems shall preferable operate as stand alone and well "isolated" from other communication networks, which may be vulnerable to overloading, interference, interruption of service, security attacks, fraud, etc. The data communication rates of SCADA is in the range of 1200 bps up to 9600 bps.
How to Read Electrical Circuits
Introduction on how to read electrical circuits:
Electrical circuits are the combinations of different electrical appliances connected in a particular manner. Electrical circuit is the symbolic representation of the circuit, which helps us to define all the parameters of the circuits such as voltage, current, resistance, capacitance and inductance, etc. It is the diagram in which all the electrical appliances connect. It is the very short way to create the circuit.
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Concept of reading electrical circuits:
In the electrical circuit, first find the values that is given in the standard units. Such as resistance in micro ohms so convert it in ohms, current in milli-ampere then convert it in ampere, voltage in milli-volt so convert it in volt, capacitance in micro farad so convert it in farad. Now first find the equivalent resistance of the circuit.
We have two formulae for finding the equivalent resistance one for series combination of resistances and other for the parallel resistances.
For the series combination of resistances Rs = R1 + R2 + R3
For the parallel combination of resistances `Rp = 1/ (R1) + 1/(R2) + 1/(R3)`
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Procedure for reading electric circuit:
To read any electrical circuit first find that which of the resistances are in series combination and which are in the parallel combination. Now apply the formula for finding the equivalent resistance. Now we use ohm’s law to find the respective current.
First, always try to find the current in the whole circuit and then try to find the potential difference across the series resistance. As we know the potential difference of the series resistance now try to find the potential difference of the parallel resistance. Now again using the Ohm’s law find the current in the remaining resistances. As we know the current and the potential of each resistance, we completely read the electrical circuit. If the circuit containing capacitors then we use the same procedure. But the formula to find the equivalent capacitor is different from the resistors.
For the series combination of capacitors `1/C_S = 1/(C1) + 1/ (C2) + 1/(C3)`
For the parallel combination of capacitors Cp = C1 + C2 + C3 same procedure is to followed to completely read the electrical circuit.
Electrical circuits are the combinations of different electrical appliances connected in a particular manner. Electrical circuit is the symbolic representation of the circuit, which helps us to define all the parameters of the circuits such as voltage, current, resistance, capacitance and inductance, etc. It is the diagram in which all the electrical appliances connect. It is the very short way to create the circuit.
Please express your views of this topic Electric Current Formula by commenting on blog.
Concept of reading electrical circuits:
In the electrical circuit, first find the values that is given in the standard units. Such as resistance in micro ohms so convert it in ohms, current in milli-ampere then convert it in ampere, voltage in milli-volt so convert it in volt, capacitance in micro farad so convert it in farad. Now first find the equivalent resistance of the circuit.
We have two formulae for finding the equivalent resistance one for series combination of resistances and other for the parallel resistances.
For the series combination of resistances Rs = R1 + R2 + R3
For the parallel combination of resistances `Rp = 1/ (R1) + 1/(R2) + 1/(R3)`
Having problem with Gravity Formula keep reading my upcoming posts, i will try to help you.
Procedure for reading electric circuit:
To read any electrical circuit first find that which of the resistances are in series combination and which are in the parallel combination. Now apply the formula for finding the equivalent resistance. Now we use ohm’s law to find the respective current.
First, always try to find the current in the whole circuit and then try to find the potential difference across the series resistance. As we know the potential difference of the series resistance now try to find the potential difference of the parallel resistance. Now again using the Ohm’s law find the current in the remaining resistances. As we know the current and the potential of each resistance, we completely read the electrical circuit. If the circuit containing capacitors then we use the same procedure. But the formula to find the equivalent capacitor is different from the resistors.
For the series combination of capacitors `1/C_S = 1/(C1) + 1/ (C2) + 1/(C3)`
For the parallel combination of capacitors Cp = C1 + C2 + C3 same procedure is to followed to completely read the electrical circuit.
Wednesday, May 1
Two Types of Reflection
Introduction to Two types of Reflection
When light traveling in one medium strikes a boundary leading to another medium, a part of incident light is through back into the original medium one. This phenomenon is called reflection of light.
Reflection is of two types:
Regular reflection
Irregular reflection or diffuse reflection
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The Two types of reflection
1. Regular reflection: When the reflection surface is smooth and well polished, the parallel rays falling on it are reflected parallel to another one, the reflected light goes in one particular direction. This is regular reflection. The smooth and well polished surface is called mirror. Silver metal is one of the best reflectors of light. So, ordinary mirrors are made by depositing a thin layer of silver metal on one side of a plane glass sheet. The silver layer is protected by a coat of red paint. The reflection of light in a mirror takes place at the silver surface. A plane mirror is represented by a straight line, with a number of short, oblique lines showing back of the mirror.
2. Irregular reflection: When the reflecting surface is rough, the parallel rays falling on it are reflected in different direction. Such a reflection is known as diffuse reflection or irregular reflection or even scattering of light. In this, a surface will behave as a smooth surface as long as the surfaces variations are small as compared to the wavelength of incident light. As wavelength of visible light is very small therefore, every surface acts as a rough surface and scattering of light or irregular reflection is more common. For example, any object in a room can be seen from all the parts of the room. This is because surface of the object is rough and it scatters or reflects light in all directions.
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Two types of Reflection : Summary
Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.
When light traveling in one medium strikes a boundary leading to another medium, a part of incident light is through back into the original medium one. This phenomenon is called reflection of light.
Reflection is of two types:
Regular reflection
Irregular reflection or diffuse reflection
Please express your views of this topic Alternate Current by commenting on blog.
The Two types of reflection
1. Regular reflection: When the reflection surface is smooth and well polished, the parallel rays falling on it are reflected parallel to another one, the reflected light goes in one particular direction. This is regular reflection. The smooth and well polished surface is called mirror. Silver metal is one of the best reflectors of light. So, ordinary mirrors are made by depositing a thin layer of silver metal on one side of a plane glass sheet. The silver layer is protected by a coat of red paint. The reflection of light in a mirror takes place at the silver surface. A plane mirror is represented by a straight line, with a number of short, oblique lines showing back of the mirror.
2. Irregular reflection: When the reflecting surface is rough, the parallel rays falling on it are reflected in different direction. Such a reflection is known as diffuse reflection or irregular reflection or even scattering of light. In this, a surface will behave as a smooth surface as long as the surfaces variations are small as compared to the wavelength of incident light. As wavelength of visible light is very small therefore, every surface acts as a rough surface and scattering of light or irregular reflection is more common. For example, any object in a room can be seen from all the parts of the room. This is because surface of the object is rough and it scatters or reflects light in all directions.
Is this topic Impulse Formula hard for you? Watch out for my coming posts.
Two types of Reflection : Summary
Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.
Energy Bands in Silicon
Introduction to Energy Bands in silicon:
Before we start with energy bands in silicon, let us know about energy bands.The energy band of any solid is a structure which describes the allowed and the forbidden values of energies for that solid. The energy band is a function of the diffracted quantum mechanical electron waves which are present in a periodic crystal lattice which have a specific crystal system and specific Bravais lattice.
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Reason behind formation of energy band in elements like silicon
As the electrons of any single isolated atom occupy several atomic orbitals which are in the form of set energy level that are discrete. If a molecule is formed by several atoms, which are brought together, the atomic levels of the atoms split and form a coupled oscillation. Similarly if a large number of atoms of the order of 1020 or more are brought together in the form of a solid, the atomic levels are very large in number and the energy difference between the two energy levels is very small which give rise to a continuous band of the energy levels.
Description of Energy Bands in Silicon
The Fermi level is one of the important levels in the energy band of any material because it determines the nature of the material i.e. the material is conductor or insulator or the semiconductor. The silicon is a semiconductor material and for it the Fermi level is exists essentially in the halfway between the valence and the conduction bands of the silicon. In silicon at 0 K temperatures there is no conduction of electron but at finite temperatures the electrons moves from valence band to the conduction band and the number of electrons which reaches the conduction band contributes for the flow of current in silicon and this current can be modeled by Fermi function.
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Conclusion for Energy Bands in Silicon
There are some intervals in the energy bands which contain no levels or the orbitals these interval forms the energy band gaps. The energy bands of any material determine several characteristics like the electronic and the optical properties of the material.
Before we start with energy bands in silicon, let us know about energy bands.The energy band of any solid is a structure which describes the allowed and the forbidden values of energies for that solid. The energy band is a function of the diffracted quantum mechanical electron waves which are present in a periodic crystal lattice which have a specific crystal system and specific Bravais lattice.
I like to share this Elastic Potential Energy Equation with you all through my article.
Reason behind formation of energy band in elements like silicon
As the electrons of any single isolated atom occupy several atomic orbitals which are in the form of set energy level that are discrete. If a molecule is formed by several atoms, which are brought together, the atomic levels of the atoms split and form a coupled oscillation. Similarly if a large number of atoms of the order of 1020 or more are brought together in the form of a solid, the atomic levels are very large in number and the energy difference between the two energy levels is very small which give rise to a continuous band of the energy levels.
Description of Energy Bands in Silicon
The Fermi level is one of the important levels in the energy band of any material because it determines the nature of the material i.e. the material is conductor or insulator or the semiconductor. The silicon is a semiconductor material and for it the Fermi level is exists essentially in the halfway between the valence and the conduction bands of the silicon. In silicon at 0 K temperatures there is no conduction of electron but at finite temperatures the electrons moves from valence band to the conduction band and the number of electrons which reaches the conduction band contributes for the flow of current in silicon and this current can be modeled by Fermi function.
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Conclusion for Energy Bands in Silicon
There are some intervals in the energy bands which contain no levels or the orbitals these interval forms the energy band gaps. The energy bands of any material determine several characteristics like the electronic and the optical properties of the material.
Thursday, April 25
Elements of a Communication System
Introduction:
Communication system is used to conveying a message from one person to other. By means of an information is the attach which holds people jointly. A communication system is known as grouping of processors and hardware used to bring about the transfer of message through communication. This system having some elements for transfer the signal from source to destination.
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Communication Systems:
A communication system is known as grouping of processors and hardware used to bring about the transfer of message through communication. This process of a system allows us to take total unit.
An energy is need to start the system. The control mechanism regulates the process. That is, it manipulates the message input into whatever form is necessary. The result of this method is the appearance of message in a form which will permit us for communication to take place.
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Elements of communication systems
Let us see about elements of communication systems,
Transmitter:
It is used for modulation and coding the original signal.
In communication system elements, it is used to converting an electrical signal into a form which is comfort for transmission on the physical channel or transmission medium.
Channel:
In communication system elements, the communications channel is known as a communication medium.
It is used to send the signal from the transmitter to the receiver.
The Receiver:
In communication system elements, It is used for demodulation such as decoding the signal from channel.
The receiver is used to recover the message signal enclosed in the received signal.
Noise:
In communication system elements, noise is produced at transmitter due to two process
1. Natural resources 2. Manmade
By nature, such as radiation from sun By manmade, noise made from like vehicles.
This noise can be reduced by using filter.
Communication system is used to conveying a message from one person to other. By means of an information is the attach which holds people jointly. A communication system is known as grouping of processors and hardware used to bring about the transfer of message through communication. This system having some elements for transfer the signal from source to destination.
I like to share this Define Second Law of Thermodynamics with you all through my article.
Communication Systems:
A communication system is known as grouping of processors and hardware used to bring about the transfer of message through communication. This process of a system allows us to take total unit.
An energy is need to start the system. The control mechanism regulates the process. That is, it manipulates the message input into whatever form is necessary. The result of this method is the appearance of message in a form which will permit us for communication to take place.
Having problem with Equation for Angular Acceleration keep reading my upcoming posts, i will try to help you.
Elements of communication systems
Let us see about elements of communication systems,
Transmitter:
It is used for modulation and coding the original signal.
In communication system elements, it is used to converting an electrical signal into a form which is comfort for transmission on the physical channel or transmission medium.
Channel:
In communication system elements, the communications channel is known as a communication medium.
It is used to send the signal from the transmitter to the receiver.
The Receiver:
In communication system elements, It is used for demodulation such as decoding the signal from channel.
The receiver is used to recover the message signal enclosed in the received signal.
Noise:
In communication system elements, noise is produced at transmitter due to two process
1. Natural resources 2. Manmade
By nature, such as radiation from sun By manmade, noise made from like vehicles.
This noise can be reduced by using filter.
Wednesday, April 24
Initial Velocity
Let us start with the difference between velocity and speed. It is quite obvious after all the discussion about vector and non vector quantities. Speed is basically a measurement with no direction. In case of velocity we also consider direction.
Velocity can be of two types: initial velocity and final velocity. When the object starts its motion then we can say that the initial velocity is zero as it has just started from rest. Similarly we can also consider int. velocity as some constant value. Let us take an example of a car starting from rest and attaining a velocity of 50 km per hour in 1 hour time period.
Please express your views of this topic Formula for Average Velocity by commenting on blog.
So here we can say that the int. velocity of the car is zero and the final velocity is 50 km per hour, directed northwards. Here mentioning the direction is very important as velocity is all about direction, it being a vector quantity.
Let us now discuss Initial velocity formula. We have 3 equations of motion that have a reference to int. velocity and hence can be used for its calculation.
They are as follows:
V = u + a t ------------ > (1)
Here v is the final velocity
U is the int. velocity
A is the acceleration
T is the time period.
So u = v – a t
Also the second equation is
S = u t + 1.5 a t^2 - - - - - - >(2)
Here s is the distance covered in time interval t.
A is the acceleration
We also have a third equation for calculating velocity. It is as follows:
V^2 = u^2 + 2 a s - - - - - - -> (3)
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Here v is the final velocity and a is the initial velocity.
All these are initial velocity equation. We can also say that u^2 = v^2 – 2 a s - - - - - - - > (4)
Let us take a real world example to clear the concept. Let us assume the final velocity of the car is 50 m per sec and the time taken to complete the journey is 2 hours. Also the acceleration is 10 meter per second square. So now using first formula we will try to calculate the initial velocity.
Hence v = u + a t
Or 50 = u + 20
U = 50 – 20 = 30 m per sec
Velocity can be of two types: initial velocity and final velocity. When the object starts its motion then we can say that the initial velocity is zero as it has just started from rest. Similarly we can also consider int. velocity as some constant value. Let us take an example of a car starting from rest and attaining a velocity of 50 km per hour in 1 hour time period.
Please express your views of this topic Formula for Average Velocity by commenting on blog.
So here we can say that the int. velocity of the car is zero and the final velocity is 50 km per hour, directed northwards. Here mentioning the direction is very important as velocity is all about direction, it being a vector quantity.
Let us now discuss Initial velocity formula. We have 3 equations of motion that have a reference to int. velocity and hence can be used for its calculation.
They are as follows:
V = u + a t ------------ > (1)
Here v is the final velocity
U is the int. velocity
A is the acceleration
T is the time period.
So u = v – a t
Also the second equation is
S = u t + 1.5 a t^2 - - - - - - >(2)
Here s is the distance covered in time interval t.
A is the acceleration
We also have a third equation for calculating velocity. It is as follows:
V^2 = u^2 + 2 a s - - - - - - -> (3)
Having problem with Elastic Potential Energy Formula keep reading my upcoming posts, i will try to help you.
Here v is the final velocity and a is the initial velocity.
All these are initial velocity equation. We can also say that u^2 = v^2 – 2 a s - - - - - - - > (4)
Let us take a real world example to clear the concept. Let us assume the final velocity of the car is 50 m per sec and the time taken to complete the journey is 2 hours. Also the acceleration is 10 meter per second square. So now using first formula we will try to calculate the initial velocity.
Hence v = u + a t
Or 50 = u + 20
U = 50 – 20 = 30 m per sec
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