Final TESU physics 116 Exam NEWEST 2025-2026
COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW VERSION!!
where does spacetime exist - CORRECT ANSWER- WITHIN the universe
as the speed of an object approaches the speed of light, its momentum? - CORRECT ANSWER-
approaches infinity
photons of light are - CORRECT ANSWER- massless
a piece of matter, even at rest and not interacting with anything else, has an "energy of being"
this is called - CORRECT ANSWER- rest energy
E=mc^2 what does C^2 mean - CORRECT ANSWER- conversion factor between energy units and
mass units. it converts the measurement of mass to the measurement of equivalent energy
A change in energy of any object at rest is accompanied by a change in - CORRECT ANSWER- its
mass
,The filament of a lightbulb energized with electricity has - CORRECT ANSWER- more mass than
when turned off.
why cant we travel at 99.99% the speed of light - CORRECT ANSWER- not enough propulsive
energy and shielding against radiation.
hypothetical particles that could move both faster than light and backward in time are called -
CORRECT ANSWER- tachyons
how may observers in universe see us from their point of view - CORRECT ANSWER- they see us
living in slow motion
what does the concept of time apply to - CORRECT ANSWER- events and entities within the
universe, not the universe as a whole
E=MC^2 is the ratio of - CORRECT ANSWER- rest energy to mass
a speck of matter with a mass of only 1 mg has a rest energy of - CORRECT ANSWER- 90 billion J
Energy and mass are - CORRECT ANSWER- the same thing. if you want to know how much energy
is in a system measure its mass
The ratio v^2 / c^2 is very small and for everyday speeds may be taken - CORRECT ANSWER- to
zero
if the acceleration of the spaceship were equal to G the occupants could well be convinced that
the ship - CORRECT ANSWER- was not accelerating but was at rest on the surface of earth
,state the principle of equivalence - CORRECT ANSWER- observations made in an accelerated
reference frame are indistinguishable from observations made in a Newtonian gravitational
field
you throw a ball in a (straight-line path) accelerating ship what does the observer see and what
does the man in the spaceship see - CORRECT ANSWER- observer= straight line path
man in ship= path is curved.
key word accelerating ship
This holds true for a beam of light
ball (thrown horizontal across spaceship) at a velocity equal to that of light - CORRECT ANSWER-
ball still curves downward (only to man inside observing)
gravitation is an interaction between masses . what is light - CORRECT 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. -
CORRECT 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 - CORRECT ANSWER- clock 2
runs slower because it is moving
In our clock example, POV from observer at clock 1 sees clock 2 doing what - CORRECT ANSWER-
sees clock 2 running slower
, near the sun, where the effect of gravity on time is greatest, what is the rate of precession -
CORRECT ANSWER- should be the greatest
A measuring stick appears ________ to an observer who is not moving with the stick. (in an
accelerated F.O.R. - CORRECT ANSWER- contracted
in a rotating disk measurements of distance will depend on - CORRECT ANSWER- strength of
gravitational field
In triangles - lines of shortest distance are called - CORRECT ANSWER- geodesic lines or geodisics
what does the path of a light beam follow - CORRECT ANSWER- a geodisic
any accelerating object produces a gravitational wave. The more massive and object ----- -
CORRECT ANSWER- the greater its acceleration, the stronger the resulting gravitational wave
applying principle of equivalence. (any effect of acceleration can be duplicated by gravity) we
must conclude that as we move in the direction in which a gravitational force acts, time will be -
CORRECT ANSWER- slowed
since every atom is a clock an a slowing down of atomic vibration indicates the slowing down of
clocks. an atom on sun should emit light of a lower Frequency (slower vibration) than light
emitted by the same element on earth. Since red light is at - CORRECT ANSWER- lower
frequency. lowering frequency shifts the color red. this is the gravitational red shift.
measurements of time depend on both - CORRECT ANSWER- relative motion and gravity
in special relativity time dilation depends on the - CORRECT ANSWER- speed of one frame of
reference relative to another
COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW VERSION!!
where does spacetime exist - CORRECT ANSWER- WITHIN the universe
as the speed of an object approaches the speed of light, its momentum? - CORRECT ANSWER-
approaches infinity
photons of light are - CORRECT ANSWER- massless
a piece of matter, even at rest and not interacting with anything else, has an "energy of being"
this is called - CORRECT ANSWER- rest energy
E=mc^2 what does C^2 mean - CORRECT ANSWER- conversion factor between energy units and
mass units. it converts the measurement of mass to the measurement of equivalent energy
A change in energy of any object at rest is accompanied by a change in - CORRECT ANSWER- its
mass
,The filament of a lightbulb energized with electricity has - CORRECT ANSWER- more mass than
when turned off.
why cant we travel at 99.99% the speed of light - CORRECT ANSWER- not enough propulsive
energy and shielding against radiation.
hypothetical particles that could move both faster than light and backward in time are called -
CORRECT ANSWER- tachyons
how may observers in universe see us from their point of view - CORRECT ANSWER- they see us
living in slow motion
what does the concept of time apply to - CORRECT ANSWER- events and entities within the
universe, not the universe as a whole
E=MC^2 is the ratio of - CORRECT ANSWER- rest energy to mass
a speck of matter with a mass of only 1 mg has a rest energy of - CORRECT ANSWER- 90 billion J
Energy and mass are - CORRECT ANSWER- the same thing. if you want to know how much energy
is in a system measure its mass
The ratio v^2 / c^2 is very small and for everyday speeds may be taken - CORRECT ANSWER- to
zero
if the acceleration of the spaceship were equal to G the occupants could well be convinced that
the ship - CORRECT ANSWER- was not accelerating but was at rest on the surface of earth
,state the principle of equivalence - CORRECT ANSWER- observations made in an accelerated
reference frame are indistinguishable from observations made in a Newtonian gravitational
field
you throw a ball in a (straight-line path) accelerating ship what does the observer see and what
does the man in the spaceship see - CORRECT ANSWER- observer= straight line path
man in ship= path is curved.
key word accelerating ship
This holds true for a beam of light
ball (thrown horizontal across spaceship) at a velocity equal to that of light - CORRECT ANSWER-
ball still curves downward (only to man inside observing)
gravitation is an interaction between masses . what is light - CORRECT 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. -
CORRECT 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 - CORRECT ANSWER- clock 2
runs slower because it is moving
In our clock example, POV from observer at clock 1 sees clock 2 doing what - CORRECT ANSWER-
sees clock 2 running slower
, near the sun, where the effect of gravity on time is greatest, what is the rate of precession -
CORRECT ANSWER- should be the greatest
A measuring stick appears ________ to an observer who is not moving with the stick. (in an
accelerated F.O.R. - CORRECT ANSWER- contracted
in a rotating disk measurements of distance will depend on - CORRECT ANSWER- strength of
gravitational field
In triangles - lines of shortest distance are called - CORRECT ANSWER- geodesic lines or geodisics
what does the path of a light beam follow - CORRECT ANSWER- a geodisic
any accelerating object produces a gravitational wave. The more massive and object ----- -
CORRECT ANSWER- the greater its acceleration, the stronger the resulting gravitational wave
applying principle of equivalence. (any effect of acceleration can be duplicated by gravity) we
must conclude that as we move in the direction in which a gravitational force acts, time will be -
CORRECT ANSWER- slowed
since every atom is a clock an a slowing down of atomic vibration indicates the slowing down of
clocks. an atom on sun should emit light of a lower Frequency (slower vibration) than light
emitted by the same element on earth. Since red light is at - CORRECT ANSWER- lower
frequency. lowering frequency shifts the color red. this is the gravitational red shift.
measurements of time depend on both - CORRECT ANSWER- relative motion and gravity
in special relativity time dilation depends on the - CORRECT ANSWER- speed of one frame of
reference relative to another
