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Yogita Ingle 4 years, 1 month ago
Unification of Forces: There have been physicists who have tried to combine a few of the above fundamental forces. These are listed in table below.
|
Name of Physicist |
Year |
Achievement in Unification |
|
Isaac Newton |
1687 |
Unified celestial and terrestrial mechanics. |
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Hans Christian Oersted and Michael Faraday |
1820 and 1830 respectively |
Unified electric and magnetic phenomena to give rise to electromagnetism. |
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James Clerk Maxwell |
1873 |
Unified electricity, magnetism and optics to show that light is an electromagnetic wave. |
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Sheldon Glashow, Abdus Salam, Steven Weinberg Carlo Rubia, Simon Vander Meer |
1979
1984 |
Gave the idea of electro-weak force which is a combination of electromagnetic and weak nuclear force.
Verified the theory of elctro-weak force. |
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Yogita Ingle 4 years, 1 month ago
According to the centripetal force definition, it is defined as Centripetal force is the component of force acting on an object in curvilinear motion which is directed toward the axis of rotation or centre of curvature.
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Gaurav Seth 4 years, 1 month ago
To find : What is the angle made by vector of with x axis?
Solution :
The formula to fin the angle between vector and x-axis,
Here,
Substitute in the formula,
Therefore, The required angle is 45°.
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Yogita Ingle 4 years, 1 month ago
An object is said to be in a rectilinear motion when two objects are moving in a straight line and are parallel to each other. Elevator movement is an example of rectilinear motion
There are three types of rectilinear motion, and they are uniform rectilinear motion, uniformly accelerated rectilinear motion and rectilinear movement with non-uniform acceleration
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The radian, denoted by the symbol, is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics. The length of an arc of a unit circle is numerically equal to the measurement in radians of the angle that it subtends; one radian is degrees or just under 57.3°
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Gaurav Seth 4 years, 1 month ago
Molarity
It is one of the most widely used unit of concentration and is denoted by M. It is defined as no. of moles of solute present in 1 liter of solution. Thus,
Molarity = No. of moles of solute / Volume of solution(in Litres)
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Yogita Ingle 4 years, 1 month ago
- According to Lenz’s law:-The polarity of the induced emf is such that it tends to produce induced current in such a direction that it opposes the change in magnetic flux that produced it.
- The (-) ive sign in given equatione= (-) (dΦ/dt)tells about the direction.
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Dεερακ Ȿιηɠꜧ 4 years, 1 month ago
Gaurav Seth 4 years, 1 month ago
Format for Speech Writing - In order to write a perfect speech, we must be well acquainted with the topic and must possess a wide range of vocabulary, a thorough knowledge of the subject, some research, and excellent organizational skills. Here are the ideal format and tips to help you write your perfect speech.
A perfect speech must consist of:-
- HEADING- The heading should be catchy and in not more than 5-6 words. You can go as creative as you want with this one just make sure you do not devote too much time to it in the exam.
- OPENING LINE- This includes salutations, introduction, and the topic. Make sure you do not mention your personal details (name, school name, etc.).
Example- Respected Principal, teachers, and my dear friends! Today, I (the name is given in the question) stand before you all to speak on the topic “(given in the question)”.
OR you could start with a quote related to the topic and then go with the salutations and introduction.
- BODY- It is the main part of your writing piece.
- It is always prescribed that you begin with a short introduction on the topic, it’s meant to be precise.
- Then you need to explain the current situation, the problems (if any), and whether after any corrective actions, betterment in the situation has been observed or not.
- It may include advantages/ disadvantages depending upon the topic in question.
- Now here, it is important you follow a sequence. It is possible that you have too many points or very few points. When you have a lot of varied points, it is better you choose a few best ones and write a line on each. In case you have very few already, explain them in at least two lines each.
- You have to strictly follow the prescribed word limit in a limited time frame so just do not go on writing and writing.
- MOST IMPORTANT- Always begin with your strongest point. You can accommodate the weaker ones in between and end with another strong point.
- Feel free to give your personal opinion in one or two lines.
- It is very important that you do not deviate from the topic. There are chances you may get ideas linking from one to another that may deviate you from the main point. You have to refrain from doing so.
- SOLUTION/CONCLUDING PARAGRAPH- Now, it is to be remembered that wherever you elaborate a problem, you always have to mention the steps being taken to improvise the situation and suggest a few solutions as well.
Now, it would be great if you could add a few quotes relating to motivating the people to take action.
Here also, the rule of STRONG-WEAK-STRONG applies.
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Shubham Ojha 4 years, 1 month ago
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