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Recent Articles in Mathematics

Calculus Castle

Find the limit: \( \lim_{x \to 3} (2x + 5) \)

Find \( \lim_{x \to 3} (2x + 5) \) Solution:To solve this limit, we substitute the value of \( x \) directly because the function is continuous at \( x = 3 \).\( \lim_{x \to 3} (2x + 5) = 2(3) + 5 = 6 + 5 = 11 \)

Morning Refresher – 5 Basic Problems in Limits to Boost Your Mind

5 Basic Problems on Limits just to refresh your mind. Problem 1 Find the limit: \( \lim_{x \to 2} (3x - 4) \) Solution: To solve this limit, we substitute the value of \(x\) directly because the function is continuous at \(x = 2\). \[ \lim_{x \to 2} (3x - 4) = 3(2) -...

THEOREM# \( \lim_{\theta\to0} \dfrac{sinθ}{θ} \) = 1

We have  \( \lim_{\theta\to0} { \sin\theta \over \theta } \) = 1 Consider the below diagram. We have r = radius of the circle.A = centre of the circle.The sector ⌔ formed by the arc BD subtends an angle θ at the centre. Case 1 : θ > 0 i.e. θ is +ve Let 0 ≤ θ ≤ \(...

Recent Articles in Physics Notes

NUMERICAL SOLUTIONS IN PHYSICS

Swimmer in a River: RELATIVE AND ABSOLUTE MOTION NUMERICAL PROBLEMS

Swimmer in a River: RELATIVE AND ABSOLUTE MOTION NUMERICAL PROBLEMS

A swimmer is crossing a river that flows at 2 m/s. The swimmer’s speed relative to the water is 4 m/s.

Determine the swimmer’s speed relative to the riverbank (absolute motion) when swimming directly downstream.
Determine the swimmer’s speed relative to the riverbank when swimming directly upstream.

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Swimmer in a River: RELATIVE AND ABSOLUTE MOTION NUMERICAL PROBLEMS

A Boat is moving downstream on a river. Determine the speed of the boat relative to the riverbank (RELATIVE AND ABSOLUTE MOTION NUMERICAL PROBLEMS)

A boat is moving downstream on a river. The river flows at a speed of 3 m/s relative to the riverbank. The boat’s engine propels it at a speed of 7 m/s relative to the water.

Determine the speed of the boat relative to the riverbank (absolute motion).
If the boat turns around and starts moving upstream, what will be its speed relative to the riverbank?

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Drive, Walk, Refuel: Find Displacement, Time & Velocity

Drive, Walk, Refuel: Find Displacement, Time & Velocity

You drive a car on a straight road at a constant speed of 70 km/h for a distance of 8.4 km, after which the car runs out of fuel. You then walk a further distance of 2 km for 30 minutes to reach the gas station. a) What is the total displacement from the beginning of your drive to your arrival at the gas station? b) What is the total time interval from the beginning of your drive to your arrival at the gas station? c) What is the average velocity from the beginning of your drive to your arrival at the gas station?

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Chemistry Updates

An Introduction to the Periodic Table

An Introduction to the Periodic Table

The periodic table is a fundamental tool in chemistry, organizing the elements based on their atomic structure and properties. This systematic arrangement not only facilitates the study of chemical behavior but also provides insights into the relationships between...

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Acids, Bases and Salts: Comprehensive Guide

Acids, Bases and Salts: Comprehensive Guide

Acids, Bases and Salts represent fundamental categories in chemistry that play crucial roles in various chemical reactions and real-world applications. Understanding their properties, behaviour in different reactions, and how they interact with each other forms the...

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The Legacy of Puddled Iron in Contemporary Metallurgy

The Legacy of Puddled Iron in Contemporary Metallurgy

Puddled iron is a refined form of iron produced through a process known as puddling. It was a significant technological innovation during the early stages of the Industrial Revolution, providing a method to transform crude pig iron into a more malleable and durable material suitable for various applications. The puddling process involves melting pig iron in a reverberatory furnace and stirring it with rods, which oxidizes impurities such as carbon and silicon, resulting in a more refined iron product.

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Biology Chapters

Distinctions between Plants and Animals

Distinctions between Plants and Animals

Distinctions between Plants and Animals The distinctions between plants and animals showcase the fascinating diversity of life on Earth. These two fundamental classifications of living organisms exhibit unique features that not only define their existence but also...

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