Answer:
Explanation:
the wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats, and the inverse of the spatial frequency.
Wavelength measures the distance from one point of a wave to the same point on an adjacent wave, whereas the frequency represents how many waves are produced from the source per second. Wavelengths are measured in nanometers and frequencies are measured in hertz or waves per second
Answer:
The ball will have a kinetic energy of 0.615 Joules.
Explanation:
Use the kinetic energy formula
The kinetic energy at the moment of leaving the hand will be 0.615 Joules. (From there on, as it ball is traveling upwards, this energy will be gradually traded off with potential energy until the ball's velocity becomes zero at the apex of the flight)
C. The WAVElength is the measurement of how far one WAVE is. Remember to think of a wave in physics as one complete cycle, which is a full motion hitting the crest and the trough. It can be measured by the crests, the troughs, or the origin. Just make sure if you're doing it at the origin that you're counting one FULL cycle.
Answer:
<u>Sound barrier
:</u>
The sound barrier is defined as a <u><em>"barrier"</em></u> that travels in all directions (because we are talking about sound waves) at the typical speed of sound in the air (1235.5 km/h). It should be noted that the name of <u><em>"barrier"</em></u> was given because it was previously considered a physical limit that prevented large aircrafts from traveling at supersonic speed (a situation that was evident in fighter planes during World War II, having problems with compressibility when flying at high speeds). However, <u>today many planes are capable of overcoming that barrier without problems.
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<u>When the Sound barrier is broken
:</u>
When an airplane approaches the speed of sound (defined in the upper lines), <u>it can be observed how the shape of the air that flows around it changes, because the wave fronts are grouping more and more.
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Then, when the plane exceeds the speed of sound (the sound barrier), something known as sonic boom or sonic explosion occurs, which is nothing more than what our ears can hear when the shock wave caused by the plane exceeds the speed of sound.
It should be noted that this explosion can be annoying to the human ear.