ALL THE QUESTIONS AND ANSWERS
why cant we travel at 99.99% the speed of light - {answer}-not
enough propulsive energy and shielding against radiation.
hypothetical particles that could move both faster than light
and backward in time are called - {answer}-tachyons
a piece of matter, even at rest and not interacting with
anything else, has an "energy of being" this is called - {answer}-
rest energy
E=mc^2 what does C^2 mean - {answer}-conversion factor
between energy units and mass units. it converts the
, measurement of mass to the measurement of equivalent
energy
ball (thrown horizontal across spaceship) at a velocity equal to
that of light - {answer}-ball still curves downward (only to man
inside observing)
gravitation is an interaction between masses . what is light -
{answer}-light may be massless but it is not energyless.
therefore, gravity pulls on the energy of light because energy is
equivalent to mass.
a circular disk with a clock in (clock 1) center, (clock 2) at edge,
(clock 3) and on ground. - {answer}-outer clock runs slower
than inner clock. clock 1 & 3 run at same rate. clock 2 runs
slower
In our clock example, an observer at clock 3 sees clock 2 doing
what - {answer}-clock 2 runs slower because it is moving
A change in energy of any object at rest is accompanied by a
change in - {answer}-its mass