Raviyank P Male, 57 Years

Associated for 3 Years 5 Months
Talent is nothing without hard work, so work hard
Class 9 - 10 Tutor

Activity Score - 175

• I teach at My Home
• I go to Student's Home
• Online
Area: 1 More
Qualification :
• B.Tech/B.E. (L.D. College Of Engineering (LDCE), Ahmedabad - 2016)
• Total Experience:
35 Years
• Hourly Fees:
INR 400
Tutoring Experience :

I am a Professional Chemical Engineer Having 2+ years of experience in Reliance Industries. Due to my passion towards teaching, I am now full time teacher online and offline. I have experience of teaching students from high school to graduation level in Maths,Chemistry and Chemical Engineering subjects for more than 3 years.

Tutoring Option :
I Can Manage Both
Tutoring Approach :

Methodology is quiet simple. I will explain till student understand the concept. Requirement from student is just zeal to learn.

Teaches:
 Class 9 - 10 Mathematics Physics Chemistry Science All Boards INR 400 / Hour College Level Chemistry B.Tech Tuition INR 500 / Hour Engineering Subjects Mathematics Chemical INR 500 / Hour Class 6 - 8 Mathematics Physics Chemistry Science CBSE INR 400 / Hour

1 Note written by me

• Trigonometric Functions

Files: 1

Notes for class XI CBSE - Trigonometric Functions

• Question: What is bond dissociation energy

Posted in: Chemistry | Date: 25/02/2018

Bond-dissociation energy (BDE or D0) is one measure of the strength of a chemical bond. It can be defined as the standard enthalpy change when abond is cleaved by homolysis, with reactants and products of the homolysis reaction .

The BDE for a molecule A-B is calculated as the difference in the enthalpies of formation of the products and reactants for homolysis

BDE=ΔfH(A∙​)+ΔfH(B∙)−ΔfH(A−B)

Bond dissociation energy (or enthalpy) is a state function and consequently does not depend on the path by which it occurs.  Therefore, the specific mechanism in how a bond breaks or is formed does not affect the BDE. Bond dissociation energies are useful in assessing the energetics of chemical processes. For chemical reactions, combining bond dissociation energies for bonds formed and bonds broken in a chemical reaction using Hess's Law can be used to estimate reaction enthalpies.

If there are more than two atoms in the molecule, follow these steps to determine the bond order:

Draw the Lewis structure. Count the total number of bonds. Count the number of bond groups between individual atoms. Divide the number of bonds between atoms by the total number of bond groups in the molecule.

• Question: what is significance of lok adalats

Posted in: Social Studies | Date: 26/02/2018

• The Lok Adalat resolves disputes relating to matters which are not very complicated in nature.
• Any court, authority or committee may refer to the Lok Adalat a dispute pending for a long time in the court or remaining in the condition prior to the beginning of the trial.
• However, a dispute as referred to the Lok Adalat only when both the parties to the dispute are agreed to get their dispute resolved through the Lok Adalat.
• Generally, the Lok Adalats have been playing an important role in the resolution of disputes relating to compensation claims, cases regarding distribution, claims against the Insurance Corporation and matters relating to marriages.

• Question: What is Samsung Knox and how does it work?

Posted in: Android Training | Date: 26/02/2018

Knox is a security feature that is being offered with certain Samsung handsets. It helps you to securely separate your personal and professional data. Essentially, you can have the benefits of using a 'work phone' without the need to carry, and secure, a separate device.

• What is Samsung Knox? Samsung Knox is an underlying system that enables personal and business data to exist on the same Samsung device, while keeping the data isolated.
• Why does Samsung Knox matter? Now that so many people use their mobile devices for work it is imperative that sensitive company information not be at risk for loss or theft. Without a framework for isolating business data and personal data, there's no way to prevent careless usage to lead to data theft.
• Who does Samsung Knox affect? Samsung Knox affects business users with a Samsung flagship device, such as the Galaxy S7. Samsung Knox goes well beyond affecting end users—this technology could be the deciding factor when a business opts to deploy smartphones to staff.
• When is Samsung Knox happening? Samsung Knox was announced in February 2013, and it has been steadily improving and spreading its reach ever since.
• How do I start using Samsung Knox? To gain the benefit of Samsung Knox, you must use one of the many supported Samsung devices as well as the My Knox application. For all new Samsung devices, Samsung is recommending users migrate to Secure Folder; the Galaxy S8 and S8+ include this app by default. Galaxy S7 and earlier devices can install Secure Folder from the Samsung Galaxy Apps on your device.

• Question: What is the Atlantic Charter?

Posted in: History | Date: 26/02/2018

The Atlantic Charter was a joint declaration released by U.S. President Franklin D. Roosevelt and British Prime Minister Winston Churchill on August 14, 1941 following a meeting of the two heads of state in Newfoundland. The Atlantic Charter provided a broad statement of U.S. and British war aims.

• Question: What is sustainable development ?

Posted in: Geography | Date: 26/02/2018

Sustainability is development that satisfies the needs of the present without compromising the capacity of future generations, guaranteeing the balance between economic growth, care for the environment and social well-being.

Sustainable development is a concept that appeared for the first time in 1987 with the publication of the Brundtland Report, warning of the negative environmental consequences of economic growth and globalization, which tried to find possible solutions to the problems caused by industrialization and population growth.

• Question: What is bullet theory?

Posted in: Mass communication | Date: 26/02/2018

The hypodermic needle model is a model of communications suggesting that an intended message is directly received and wholly accepted by the receiver. The model was originally rooted in 1930s behaviorism and largely considered obsolete for a long time, but big data analytics-based mass customization has led to a modern revival of the basic idea.

The theory suggests that the mass media could influence a very large group of people directly and uniformly by ‘shooting’ or ‘injecting’ them with appropriate messages designed to trigger a desired response.

Both images used to express this theory (a bullet and a needle) suggest a powerful and direct flow of information from the sender to the receiver. The bullet theory graphically suggests that the message is a bullet, fired from the "media gun" into the viewer's "head". With similarly emotive imagery the hypodermic needle model suggests that media messages are injected straight into a passive audience which is immediately influenced by the message. They express the view that the media is a dangerous means of communicating an idea because the receiver or audience is powerless to resist the impact of the message. There is no escape from the effect of the message in these models. The population is seen as a sitting duck. People are seen as passive and are seen as having a lot of media material "shot" at them. People end up thinking what they are told because there is no other source of information.

New assessments that the Magic Bullet Theory was not accurate came out of election studies in "The People's Choice," (Lazarsfeld, Berelson and Gaudet, 1944/1968). The project was conducted during the election of Franklin D. Roosevelt in 1940 to determine voting patterns and the relationship between the media and political behavior. The majority of people remained untouched by the propaganda; interpersonal outlets brought more influence than the media. The effects of the campaign were not all-powerful to where they persuaded helpless audiences uniformly and directly, which is the very definition of what the magic bullet theory does. As focus group testing, questionnaires, and other methods of marketing effectiveness testing came into widespread use; and as more interactive forms of media (e.g.: internet, radio call-in shows, etc.) became available, the magic bullet theory was replaced by a variety of other, more instrumental models, like the two step of flow theory and diffusion of innovations theory.

• Question: Give a brief on Shannon weaver model.

Posted in: Mass communication | Date: 26/02/2018

Shannon Weaver model of communication was created in 1948 when Claude Elwood Shannon wrote an article “A Mathematical Theory of Communication” in Bell System Technical Journalwith Warren Weaver.

Shannon was an American mathematician whereas Weaver was a scientist. The Mathematical theory later came to be known as Shannon Weaver model of communication or “mother of all models.” This model is more technological than other linear models.

Concepts in Shannon Weaver Model

Sender (Information source) – Sender is the person who makes the message, chooses the channel and sends the message.

Encoder (Transmitter) –Encoder is the sender who uses machine, which converts message into signals or binary data. It might also directly refer to the machine.

Channel –Channel is the medium used to send message.

Decoder (Receiver) – Decoder is the machine used to convert signals or binary data into message or the receiver who translates the message from signals.

Receiver (Destination) –Receiver is the person who gets the message or the place where the message must reach. The receiver provides feedback according to the message.

Noise –Noise is the physical disturbances like environment, people, etc. which does not let the message get to the receiver as what is sent.

Explanation of Shannon Weaver Model

The sender encodes the message and sends it to the receiver through a technological channel like telephone and telegraph. The sender converts the message into codes understandable to the machine. The message is sent in codes through a medium.

The receiver has to decode the message before understanding it and interpreting it. The receptor machine can also act as a decoder in some cases. The channel can have noise and the receiver might not have the capacity to decode which might cause problems in communication process.

Here, for instance, brain might be the sender, mouth might be the encoder which encodes to a particular language, air might be the channel, another person’s ear might be the receptor and his brain might be the decoder and receiver.

Similarly, air is the channel here, the noise present in his environment that disturbs them is the noise whereas his response is the feedback. There were only 5 components when the model was made. Noise was added later.

As Shannon was an engineer, this model was first made to improve technical communication, mainly for telephonic communication. It was made to to maximize telephone capacity with minimum noise.

Later, Weaver applied it for all kind of communications to develop effective communication and the model became famous as Shannon Weaver model. In engineering, Shannon’s model is also called information theory and is used academically to calculate transmission through machines and also has a formula.

Example of Shannon Weaver Model

A businessman sends a message via phone text to his worker about a meeting happening about their brand promotion. The worker does not receive the full message because of noise. It goes like this:

Businessman: We have a meeting at the office (“at 8 am” goes missing due to phone network disruption or noise)

Worker (feedback) : At what time?

Here,

Encoder: Telephone network company

Channel: Mobile network

Noise: Missing text due to disruption

Decoder: Mobile phone

The transmission error is the noise in this case. The feedback lets the businessman know that the message reached incomplete. The receiver gets the chance to get the full message only after his feedback.

• Question: What is bronze?

Posted in: History | Date: 26/02/2018

Bronze is an alloy consisting primarily of copper, commonly with about 12% tin and often with the addition of other metals (such as aluminium, manganese, nickel or zinc) and sometimes non-metals or metalloids such as arsenic, phosphorus or silicon. These additions produce a range of alloys that may be harder than copper alone, or have other useful properties, such as stiffness, ductility, or machinability.