Tag: GRADE 9 PHYSICS
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“Sonic Resonance: Unlocking the Speed of Sound with Air Column Magic!”
Discover the fascinating connection between air column resonance and the speed of sound. Explore how standing waves in tubes help accurately measure this physical constant.
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Speed of Sound Numerical Problems
“Struggling with speed of sound physics problems? This guide breaks down complex calculations with step-by-step solutions.Sharpen your understanding and dive into the practical examples and conquer sonic challenges”
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Calculating Force: Magnitude and Direction in Physics
Question: A constant force acting on a body of mass 3.0 kg changes its speed from 2.0 ms-1 to 3.5 ms-1 in 25 sec. The direction of the motion of the body remains unchanged. What is the magnitude and direction of the force? Solution: Calculating the Acceleration: Initial velocity of the body $${u=2 \ \frac{m}{s}}$$…
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Calculating Stopping Time for a Body under Constant Retarding Force
Question: A constant retarding force of 50 N is applied to a body of mass 20 Kg moving initially with a speed of 15 ms-1 .How long does the body take to stop? Solution: Stopping time calculation: Calculating the acceleration: $${Acceleration =\frac{Force}{Mass}}$$ $${Acceleration =\frac {50 \ N}{20 \ Kg}}$$ $${Acceleration= 2.5 \ \frac{m}{s^2}}$$ Retardation: Retardation…
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Circular Orbit Speed Calculation for Satellite: 42250 Km Radius in 24 Hours
Question: An artificial satellite is moving in a circular orbit of radius 42250 Km.Calculate its speed if it takes 24 hours to revolve around the earth. Solution: Circular orbit speed calculation: $${Speed =\frac{Distance \ travelled}{Time \ taken}}$$ Speed of the artificial satellite=$${\frac{Distance \ travelled \ by \ the \ satellite}{Time \ taken \ by \…
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