<span>In an earthquake, three basic types of seismic waves are created: </span>P-waves<span>, </span>S-waves<span> and surface waves. P-waves or primary / pressure wave and S-waves or secondary / shear wave are collectively called body waves. But t<span>he surface waves does the most damage to property as it <span>can be much larger in </span><span>amplitude.</span></span></span>
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Answer: Use an airplane,Jet, hot air ballon etc.
Explanation:
People can fly now with the ivention of an air-object.
Thats a way to increase yourself.
Snell's law: n1Sinα=n2Sin β where α=Incidence angle, β=angle of refraction, n1 and n2 are the indices of refraction for water and air respectively.
Therefore,
Sinα=n2/n1 Sinβ For refracted ray to be along the surface of water, β=90° and thus Sinβ = 1
Sinα=n2/n1= 1/1.33 = 0.7519 => α=sin^-1 (0.7519) = 48.75°
When light moves from a medium of higher index of refraction (such as water) to medium of lesser index of refraction (such as air), the refracted ray is bend such that α is bigger than β. This is internal refraction. At some value of α, β approaches 90°. This incidence angle is called critical incidence angle. Therefore, the current scenario is shows critical angle of incidence.
Answer:
C) one-half as great
Explanation:
We can calculate the acceleration of gravity in that planet, using the following kinematic equation:
In this case, the sphere starts from rest, so 
. Replacing the given values and solving for g':
The acceleration due to gravity near Earth's surface is 
. So, the acceleration due to gravity near the surface of the planet is approximately one-half of the acceleration due to gravity near Earth's surface.
