Which wave has the greatest amplitude?
2 answers:
Explanation:
The maximum displacement of the particles of wave is called its amplitude. The amplitude of purple wave is greatest i.e. wave A
The energy of wave is directly proportional to the square of amplitude. So, the purple wave carries the most energy i.e. wave A.
The number of oscillations or vibrations per unit time is called frequency of wave. The frequency of blue wave is largest i.e. wave C
The distance between two consecutive crests or two troughs is called the wavelength of wave. Wavelength and frequency have inverse relationship. So, the wavelength of blue wave is smallest i.e wave C
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The mass of ball a is twice the mass of ball b:
This means that the initial potential energy of ball a (
) is twice the potential energy of ball b (
):
When the two balls reach the ground, the potential energy of each ball has converted into kinetic energy (since now their altitude is h=0), because the total mechanical energy of each ball must be conserved. Therefore:
and so the kinetic energy of ball a must be twice the kinetic energy of ball b:
This means that the initial potential energy of ball a (
When the two balls reach the ground, the potential energy of each ball has converted into kinetic energy (since now their altitude is h=0), because the total mechanical energy of each ball must be conserved. Therefore:
and so the kinetic energy of ball a must be twice the kinetic energy of ball b: