1
Question
1.What is energy density of a wave?
2. What is kinetic energy density of a wave?
3. What is potential energy density of a wave?
4. What is power of wave?
5. What is intensity of wave?
6. What is constructive interference?
7. What is destructive interference?
8. What is difference between constructive and destructive interferences?
2. What is kinetic energy density of a wave?
3. What is potential energy density of a wave?
4. What is power of wave?
5. What is intensity of wave?
6. What is constructive interference?
7. What is destructive interference?
8. What is difference between constructive and destructive interferences?
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Solution
The power of a wave is energy transported per unit time by the oscillations of a particular wave.
Intensity is the power transferred per unit area, where the area is measured on the plane perpendicular to the direction of propagation of the energy.
Constructive Interference is the interference of two or more waves of equal frequency and phase, resulting in their mutual reinforcement and producing a single amplitude equal to the sum of the amplitudes of the individual waves.
Waves don't usually reflect when they strike other waves. Instead, they combine. If the amplitudes of two waves have the same sign (either both positive or both negative), they will add together to form a wave with a larger amplitude. This is called constructive interference. If the two amplitudes have opposite signs, they will subtract to form a combined wave with a lower amplitude. This is called destructive interference. Sound waves with higher amplitudes sound louder than sound waves with lower amplitudes. Constructive interference will make a sound louder while destructive interference will make a sound quieter.
Energy density can be defined energy of the wave per unit volume of the space in which it is propogating.
The energy density consists of two parts, one kinetic due to the motion of the fluid and the other potential due to the variation in the fluid height. It is the resonance between these two energies which gives rise to the wave motion
Intensity is the power transferred per unit area, where the area is measured on the plane perpendicular to the direction of propagation of the energy.
Constructive Interference is the interference of two or more waves of equal frequency and phase, resulting in their mutual reinforcement and producing a single amplitude equal to the sum of the amplitudes of the individual waves.
Waves don't usually reflect when they strike other waves. Instead, they combine. If the amplitudes of two waves have the same sign (either both positive or both negative), they will add together to form a wave with a larger amplitude. This is called constructive interference. If the two amplitudes have opposite signs, they will subtract to form a combined wave with a lower amplitude. This is called destructive interference. Sound waves with higher amplitudes sound louder than sound waves with lower amplitudes. Constructive interference will make a sound louder while destructive interference will make a sound quieter.
Energy density can be defined energy of the wave per unit volume of the space in which it is propogating.
The energy density consists of two parts, one kinetic due to the motion of the fluid and the other potential due to the variation in the fluid height. It is the resonance between these two energies which gives rise to the wave motion
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