The answer - all of the above.
X -rays are applied in many ways and for various purposes in every day life. They are defined as powerful waves of electromagnetic energy. They are able to penetrate most materials both organic and inorganic.
Their ability to penetrate organic material has made them especially useful in medicine where they can penetrate the body and reveal internal structures such as bones and organs.
In the airports, they are used for security purposes to check in luggage bags for prohibited or dangerous items.
In art, they are widely used by authenticators check for types of paper, materials, changes of composition and other clues to help establish authenticity of art pieces.
Answer:
<em>264 m</em>
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Explanation:
The complete question is
Suppose that you measure the length of a spaceship, at rest relative to you, to be 400 m. How long will you measure it to be if it flies past you at a speed of v = 0.75c
using the length contraction relationship,
where 
is the relativistic length
is the actual length = 400 m
v is the velocity of the spaceship
c is the speed of light
since v = 0.75c
v/c = 0.75
substituting, we have
= 400 x 0.66 = <em>264 m</em>
Your weight will be less than on Earth because in space there is no or very less gravitational pull. There are no planets forming any magnetic fields for other objects to be attracted to.
Answer:
Our atmosphere is a mixture of gases that surround Earth. It is kept in place by the pull of Earth's gravity. If Earth was a much smaller planet, like Mercury or Pluto, its gravity would be to weak to hold a large atmosphere
Explanation:
