What Is Physics And What Are Its Uses?

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Term Paper Title	What Is Physics And What Are Its Uses?
# of Words	487
# of Pages (250 words per page double spaced)	1.95

What Is Physics and What Are Its Uses?

What Is Physics and What Are Its Uses?

     Physics, a branch of science, is traditionally defined as the study of
matter, energy, and the relation between them.  The interaction between matter
and energy is found everywhere.  In order for matter to move, it requires some
form of energy.
     Sports show many good examples of the relationship between matter and
energy. For instance, a pitcher requires energy to throw a baseball at the
incredible speed and accuracy that is needed to keep the batter from using his
energy to try and hit the ball.  The batter exhibits the need for a certain
trajectory because he/she needs to hit the ball hard enough and keep it high
enough to sail over the outfield wall. On the other hand, the batter must be
certain to keep the trajectory low enough so that the ball will reach the fence.
Trajectory is also seen in basketball, where players must shoot the ball with
enough arch to get over the front of the rim, and go through the hoop.  The
energy required to do this comes from not only the arms, but the legs as well.
     The medical field has seen enormous breakthroughs because of principles
of physics. Doctors are now able to use lasers for surgery.  Lasers are based
on the physical principle of light, and are devices for the creation and
amplification of a narrow, intense beam of coherent light.  New laser
microsurgery can actually alter the shape of the cornea in the eye so the
patient's eyesight can return to normal, a...

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