phys 1010 final exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answers
If a truck accelerates from rest to 60 mph in 9 seconds, what is the truck's average
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
acceleration? The unit mph stands for "miles per hour." 1 mile is 1.6 km. - correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔about 3 m/s^2 |||\\\ |||\\\
General relativity is the physics framework to understand gravity as a geometrical property of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
space-time. Which of the following phenomena is consistent with theory of the general |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
relativity?
(A)
the equival |||\\\
ence of mass and energy, famously known as
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
" E=mc^2
|||\\\
(B
)
time dilation where clocks tick slower in a moving frame
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
with relativistic |||\\\ |||\\\
speed
(speed near the speed of light) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
.
(C)
length co |||\\\
ntraction in which the length of an object |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
moving at relativistic |||\\\ |||\\\ |||\\\
speed
,(speed near the speed of |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
light) becomes shorter |||\\\ |||\\\
.
(D)
time invariance in which the speed of light is assumed to
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
be constant in all inertial reference frame.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(E)
gravitational lensing wh |||\\\ |||\\\
ere bright stars or galaxies |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
behind a massive celestial object can appear as |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
multiple elongated arc shapes |||\\\ |||\\\ |||\\\
. - correct answer✔✔gravitational lensing where bright stars or galaxies behind a massive
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
celestial object can appear as multiple elongated arc shapes. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which of the following reference frame is an example of inertial reference frame?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(A)
Reference frame that is moving with a space shu |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
ttle that |||\\\ |||\\\
is in orbit |||\\\ |||\\\
.
(B)
Reference
frame that is moving with an airplane |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
flying at the constant speed of 500 mph horizontally |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
at a high altitude|||\\\ |||\\\ |||\\\
.
,(C)
Reference frame that is moving with a roller coaster that |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
is going through a looptheloop.
|||\\\ |||\\\ |||\\\ |||\\\
(D)
Reference frame that is moving with an automobile that |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
is accelerating along a straight line
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\
.
(E)
Any reference frame where the observer is. - correct answer✔✔(B)
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Reference
frame that is moving with an airplane |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
flying at the constant speed of 500 mph horizontally
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
at a high altitude
|||\\\ |||\\\ |||\\\
.
A 1300 kg car is moving at a constant speed 60 mph. The driver
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
suddenly steps on the brake and the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
road surface exerts a |||\\\ |||\\\ |||\\\ |||\\\
constant friction force of 11 kN on the car. How far will the car |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
travel before it stops after the brake? Note that 1 mile is 1.6 km. - correct answer✔✔about 42
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
m
A 10 cm
|||\\\ |||\\\
×
10 cm |||\\\ |||\\\
×
, 10 cm cube of heavy metal is at the bottom
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
of a water tank. The pressure at the bottom of the cube is
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(A)
larger than the pressure on the top of the cube. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(B)
less than the pressure on the top of the cube.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(C)
equal to the pressure on the top o |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
f the cube.
|||\\\ |||\\\
(D
)
equal to the weight of the displaced water. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(E)
equal to the weight of the metal cube. - correct answer✔✔(A) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
larger than the pressure on the top of the cube |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
If an object of mass 2 kg is held 10 m above the floor,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(A)
the object's kinetic energy is about 100 J.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(B)
the object's gravitational po |||\\\ |||\\\ |||\\\
tential energy is zero. |||\\\ |||\\\ |||\\\
(C)
the object's gravitational potential energy is about 100 J.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(D)
the object's kinetic energy is about 200 J.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answers
If a truck accelerates from rest to 60 mph in 9 seconds, what is the truck's average
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
acceleration? The unit mph stands for "miles per hour." 1 mile is 1.6 km. - correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔about 3 m/s^2 |||\\\ |||\\\
General relativity is the physics framework to understand gravity as a geometrical property of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
space-time. Which of the following phenomena is consistent with theory of the general |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
relativity?
(A)
the equival |||\\\
ence of mass and energy, famously known as
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
" E=mc^2
|||\\\
(B
)
time dilation where clocks tick slower in a moving frame
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
with relativistic |||\\\ |||\\\
speed
(speed near the speed of light) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
.
(C)
length co |||\\\
ntraction in which the length of an object |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
moving at relativistic |||\\\ |||\\\ |||\\\
speed
,(speed near the speed of |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
light) becomes shorter |||\\\ |||\\\
.
(D)
time invariance in which the speed of light is assumed to
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
be constant in all inertial reference frame.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(E)
gravitational lensing wh |||\\\ |||\\\
ere bright stars or galaxies |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
behind a massive celestial object can appear as |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
multiple elongated arc shapes |||\\\ |||\\\ |||\\\
. - correct answer✔✔gravitational lensing where bright stars or galaxies behind a massive
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
celestial object can appear as multiple elongated arc shapes. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which of the following reference frame is an example of inertial reference frame?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(A)
Reference frame that is moving with a space shu |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
ttle that |||\\\ |||\\\
is in orbit |||\\\ |||\\\
.
(B)
Reference
frame that is moving with an airplane |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
flying at the constant speed of 500 mph horizontally |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
at a high altitude|||\\\ |||\\\ |||\\\
.
,(C)
Reference frame that is moving with a roller coaster that |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
is going through a looptheloop.
|||\\\ |||\\\ |||\\\ |||\\\
(D)
Reference frame that is moving with an automobile that |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
is accelerating along a straight line
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\
.
(E)
Any reference frame where the observer is. - correct answer✔✔(B)
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Reference
frame that is moving with an airplane |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
flying at the constant speed of 500 mph horizontally
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
at a high altitude
|||\\\ |||\\\ |||\\\
.
A 1300 kg car is moving at a constant speed 60 mph. The driver
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
suddenly steps on the brake and the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
road surface exerts a |||\\\ |||\\\ |||\\\ |||\\\
constant friction force of 11 kN on the car. How far will the car |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
travel before it stops after the brake? Note that 1 mile is 1.6 km. - correct answer✔✔about 42
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
m
A 10 cm
|||\\\ |||\\\
×
10 cm |||\\\ |||\\\
×
, 10 cm cube of heavy metal is at the bottom
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
of a water tank. The pressure at the bottom of the cube is
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(A)
larger than the pressure on the top of the cube. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(B)
less than the pressure on the top of the cube.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(C)
equal to the pressure on the top o |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
f the cube.
|||\\\ |||\\\
(D
)
equal to the weight of the displaced water. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(E)
equal to the weight of the metal cube. - correct answer✔✔(A) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
larger than the pressure on the top of the cube |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
If an object of mass 2 kg is held 10 m above the floor,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(A)
the object's kinetic energy is about 100 J.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(B)
the object's gravitational po |||\\\ |||\\\ |||\\\
tential energy is zero. |||\\\ |||\\\ |||\\\
(C)
the object's gravitational potential energy is about 100 J.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(D)
the object's kinetic energy is about 200 J.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
