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3 years ago

According to Huygens's principle, what is the explanation for boundary behaviors?

Physics

2 answers:

xeze [42]3 years ago

8 0

Answer:

The Huygens–Fresnel principle says that every point in the wavefront is also a source of spherical "wavelets", and these wavelets interfere with each other, and the sum of these spherical wavelets are the new wavefront (this also happens when the wave hits a interface, and mostly in these cases is usefull this principle). So, for example, when a plane wave hits a surface, in that moment the wave can "change" a spherical wave now (you can see this when a plane wave impacts a single slit). This also explains why a beam changes of direction when it hits a surface and is diffracted.

VladimirAG [237]3 years ago

4 0

The Huygens<span>-Fresnel </span>principle<span> states that every point on a wavefront is a source of wavelets. These wavelets spread out in the forward direction, at the same speed as the source wave. The new wavefront is a line tangent to all of the wavelets. </span>

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When a sinusoidal wave with speed 20 m/s , wavelength 35 cm and amplitude of 1.0 cm passes, what is the maximum speed of a point

vova2212 [387]

To solve this problem it is necessary to apply the concepts related to frequency as a function of speed and wavelength as well as the kinematic equations of simple harmonic motion

From the definition we know that the frequency can be expressed as

$f = \frac{v}{\lambda}$

Where,

$v = Velocity \rightarrow 20m/s$

$\lambda = Wavelength \rightarrow 35*10^{-2}m$

Therefore the frequency would be given as

$f = \frac{20}{35*10^{-2}}$

$f = 57.14Hz$

The frequency is directly proportional to the angular velocity therefore

$\omega = 2\pi f$

$\omega = 2\pi *57.14$

$\omega = 359.03rad/s$

Now the maximum speed from the simple harmonic movement is given by

$V_{max} = A\omega$

Where

A = Amplitude

Then replacing,

$V_{max} = (1*10^{-2})(359.03)$

$V_{max} = 3.59m/s$

Therefore the maximum speed of a point on the string is 3.59m/s

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3 years ago

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dlinn [17]

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When air resistance is ignored, _____ of the projectile affect(s) the range and maximum height of the projectile.

FromTheMoon [43]

When air resistance is ignored, initial velocity of the projectile affect the range and maximum height of the projectile.

Projectile is a missile designed to be fired from a rocket or gun.

A projectile is the object that is propelled by the application of an external force and then moves freely under the influence of gravity and air resistance.

The range is defined as the distance between the launch point and the point where the projectile hits the ground.

The height from the ground at the top most position of projectile is referred to as maximum height.

When air resistance is ignored, initial velocity of the projectile affect the range and maximum height of the projectile.

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ankoles [38]

Answer:ask yo mama

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