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 In a mechanical wristwatch, which part works in the same wayas a pendulum in a clock?  The discovery of which principle made the accurate measurementof time possible? What is this principle? Explain with a diagram.   Solution & Explanation Answer to Q1 In a mechanical wristwatch, the balance wheel (often combinedwith a spiral hairspring) functions …

Mechanical Watch Pendulum-Like Mechanism and the Principle of Accurate Time Measurement Read More »

Questions Q1. A car travels along a circular racing track at a constant speed of 100 km/h.Does it have uniform motion? Justify. Q2. A simple pendulum is oscillating between two points, A and B. Describe its motionin a few sentences by using the key words: periodic, time period, uniform,interval, time, and displacement. Q3. A spaceship travels …

Uniform vs. Non-Uniform Motion, Pendulum Oscillations, and Speed Conversion Read More »

Question Q12. Starting from point A, Krati moves along a rectangular path ABCD as shown in the image. She takes 2 minutes to travel each side. Plot a distance-time graph and explain whether the motion is uniform or non-uniform. Image Description Rectangular path shows a rectangle labeled ABCD. The top side AB is 8 m, the right …

Non-Uniform Motion Along a Rectangular Path: Distance-Time Graph Explanation Read More »

Time Period of a Simple Pendulum Using Intermediate Times (SEO Title) Question: In a simple pendulum experiment, the bob takes time t1 to move from its extreme position A to some intermediate point C, and t2 to move from C to the mean position O. Prove that the time period T of the pendulum is …

Time Period of a Simple Pendulum Using Intermediate Times Read More »

Question 9 (i):A sinker is found to weigh 56.7 gf in water. When the sinker is tied to a cork of weight 6 gf, the combination is found to weigh 40.5 gf in water. Calculate the relative density of cork. Solution to Question 9 (i) Given: Weight of the sinker in water,( W_{s,w} = 56.7 …

How to calculate the relative density Read More »

Solutions to Grade IX ICSE Fluids Numerical Test (4th Feb 2025) Solutions to Grade IX ICSE Fluids Numerical Test (4th Feb 2025) Graded Worksheet 1 (Total Marks: 50) 1. Pressure exerted by high heels A woman weighing 600 N stands on heels with a contact area of 1 cm2. Converting area: (1~text{cm}^2 = 1 times …

ICSE Grade IX Fluids Numerical Test 4th Feb 2025 Read More »

Answer Key for ICSE Chemistry Term 2 (2025) Sample Paper Answer Key ICSE Chemistry Term 2 (2025) Sample Paper Chapter: Gas Laws Section A: Multiple Choice Questions 1. The graph of PV vs P for a gas is: Answer: (c) A straight line parallel to the X-axis 2. The absolute temperature corresponding to 27°C is: …

ICSE Chemistry Term 2 (2025) Gas Laws Answer Key Read More »

Solution for Half the Wavelength Question In the given curve, which segment represents half the wavelength? Options: AB BD DE AE Wave Diagram A B D E Diagram illustrating wave segments AB, BD, DE, and AE. Solution Explanation Click to View Solution A single full wavelength ((lambda)) is measured between two points on the wave …

Half the Wavelength Explained: Identify the Correct Wave Segment with Examples Read More »

Gas Laws: Pressure, Temperature, and Advanced Numerical Scenarios Gas Laws: Pressure, Temperature, and Advanced Numerical Scenarios Batch 14: Numericals on Pressure and Temperature Effects Q1: A steel tank of ( 50 , text{liters} ) capacity is filled with oxygen at ( 15 , text{atm} ). If the oxygen is used to fill cylinders of ( …

Gas Laws Mastery: Pressure, Temperature Effects, and Advanced Numerical Problems Read More »

Gas Laws: Numerical and Co</mark></mark>nceptual Problems Gas Laws: Numerical and Conceptual Problems Batch 13: Numerical and Conceptual Problems Gas laws are integral to understanding the behavior of gases under various conditions. They provide critical insights into how gases respond to changes in pressure, volume, and temperature, which are fundamental concepts in chemistry and physics. Furthermore, …

Gas Laws: Challenging Numericals, Real-Life Applications, and Molecular Weight Calculations Read More »