This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
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Here are the answers to Question 5 based on the image provided: Question 5 - WAVES AND SOUND a) Transverse waves: Waves in which the oscillations of the medium are perpendicular to the direction of wave propagation. Examples include light waves and waves on a string*. Longitudinal waves: Waves in which the oscillations of the medium are parallel to the direction of wave propagation. Examples include sound waves and P-waves (seismic waves)*. b) (i) Calculate wave speed. Step 1: Identify the given values. Wavelength = 0.80 m Frequency f = 250 Hz Step 2: Use the formula for wave speed. v = f Step 3: Substitute the values and calculate. v = (250 Hz) × (0.80 m) v = 200 m/s The wave speed is 200 m/s. (ii) Calculate time period. Step 1: Identify the given frequency. Frequency f = 250 Hz Step 2: Use the formula for time period. T = (1)/(f) Step 3: Substitute the value and calculate. T = (1)/(250 Hz) T = 0.004 s The time period is 0.004 s. c) Resonance* is a phenomenon that occurs when an oscillating system is driven by an external force at its natural frequency, resulting in a significant increase in the amplitude of oscillations. d) Four properties common to all waves are: 1. Reflection 2. Refraction 3. Diffraction 4. Interference 3 done, 2 left today. You're making progress.