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In the 2nd floor study of his Princeton, New Jersey home, Einstein spent his last
days, weeks, and months working on a theory to unify all the known laws of
physics... a theory so powerful that it would describe all the workings of the
universe- a unifying theory called
D. The Theory of Everything
Today physicists are working on such a theory- String Theory ... which of the
following described such a String Theory universe?
D. All answers apply
The first step toward unification came in 1665 when the concept of gravity was
created, unifying the heavens and the earth by a fellow named
C. Isaac Newton
For over 250 years no scientist really understood how gravity worked... this is a
problem that was taken on by Einstein (at the age of 26) ... his thoughts, works,
and equations on the nature of _______ conflicted with the accepted
understanding of gravity.
A. Light
Gravity was thought to be a force that acts over distances instantaneously ... for
example, if the sun suddenly disappeared, the earth would simply begin traveling
in a straight line immediately upon the disappearance of the sun ... this presented
a problem because nothing travels instantaneously .. what would happen to the
earth in the case given above?
B. The earth wouldn't be released from orbit to go in a straight line before the lack of
light from the sun reached (or didn't reach in this case) the earth
Warps and curves in the fabric of space and time could best be described as
B. Gravity
Who was the person that came up with a theory ( four simple equations) that
unified (explained the relationship between) magnetism and electricity (creating
the force of electromagnetism)?
D. James Clark Maxwell
Which of the following statements is correct?
C. The electromagnetic force is stronger than gravity
A group of physicists led by Niels Bohr found that atoms are made of protons,
electrons, and neutrons... they were in unfamiliar atomic territory where the
laws/theories of electromagnetism and gravity didn't work ... they developed a
new theory to describe the functioning of the atomic (and subatomic) realm ruled
by the laws of chance called
B. Quantum Mechanics
By the 1930's it appeared that four forces seemed to govern the known universe...
these forces were gravity, the electromagnetic force, _____________, and
_____________