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3 years ago

When do surface waves reach land

Physics

2 answers:

Alex_Xolod [135]3 years ago

7 0

Answer:

Surface waves are the kind of waves that occur on the surface of the ocean. The reason behind their occurrence is the geological effects, usually in the form of winds in near geographical regions or in that region.

These waves reach the land when the geological winds give a push to the waves and they travel miles and finally hit the land. These waves range in sizes, for small sizes to the the size of tsunami.

fiasKO [112]3 years ago

3 0

Answer with Explanation:

"Surface waves" are also known as "wind-generated waves." Such waves occur on the surface of the water that has a zero parallel shear stress. Their speed upon reaching the land will depend upon the wind blowing over the fluid's surface. So, this means that they could travel several miles before actually reaching the land. They could also come in different sizes, from small ripples to big tsunamis.

The factors that tell the time when the surface waves reach the land are: wind speed, depth of the water, wind duration, the area that is affected by the fetch (width) and the uninterrupted distance of open water.

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A 481-m long spaceship passes by an observer at the speed of 2.70×10^8 m/s. What length does the observer measure for the spaces

galben [10]

Answer:

209.66 m

Explanation:

Given:

Original length of the spaceship, L = 481 m

Speed of the spaceship, v = 2.70 × 10⁸ m/s

Now,

using the concept of length contraction, we have

$L=\frac{L'}{\sqrt{1-\frac{v^2}{c^2}}}$

where,

L' is the observed length

c is the speed of the light

Thus,

on substituting the respective values, we get

$481=\frac{L'}{\sqrt{1-\frac{(2.70\times10^8)^2}{(3\times10^8)^2}}}$

L' = 209.66 m

3 0

4 years ago

Models that explain the formation of the solar system through a series of gradual steps are considered evolutionary theories. Wh

lora16 [44]

Answer:

Catastrophic theories

Explanation:

The theory of catastrophe is a collection of methods used to analyze and describe the ways in which a system can experience sudden significant behavioral changes when one or more of the variables that govern it are continuously modified.

Georges Louis de Buffon suggested in 1745 the first destructive theory — that a comet pulled material from the Sun to form the planets.

Therefore the answer is -

Catastrophic theories

4 0

3 years ago

Define the relationship between refraction and reflection

ElenaW [278]

Reflection and refraction are two different phenomenons. In case of reflection, wave bounces back into the same medium after incident with the interface of two mediums. Reflection will happen if surface is shiny as well as smooth. If surface is irregular, one will get diffused reflection. Refraction means bending of light when waves travel from one medium to another

8 0

4 years ago

A concave mirror produces a real image that is three times as large as the object. If the object is 20 cm in front of the mirror

TiliK225 [7]

Answer:

The image is produced 60 cm behind the mirror

The focal length of the mirror is 30 cm

Explanation:

u = Object distance = 20 cm

v = Image distance

f = Focal length

m = Magnification = 3

$m=-\frac{v}{u}\\\Rightarrow 3=-\frac{v}{20}\\\Rightarrow v=-3\times 20\\\Rightarrow v=-60\ cm$

The image is produced 60 cm behind the mirror

$\frac{1}{f}=\frac{1}{u}+\frac{1}{v}\\\Rightarrow \frac{1}{f}=\frac{1}{20}+\frac{1}{-60}\\\Rightarrow \frac{1}{f}=\frac{1}{30}\\\Rightarrow f=\frac{30}{1}=30\ cm$