Question

Using four vectors, show that it is impossible to have an inertial reference frame in which a photon is motionless.

Answer #1

a) Using four vectors, show that it is impossible to have an
inertial reference frame in which a photon is motionless.

Inertial reference frame A and inertial reference frame B have
x-axes that point in the same direction, and reference frame A
moves relative to reference frame B at a constant velocity of 0.680
c in the +x-direction. These reference frames record the times and
positions of the following two events.
A space transmitter is destroyed in a sudden explosion.
The on-board computer on a space satellite suddenly shuts
down.
According to reference frame B, the computer shutdown occurred 7.51
x...

Pleases explain in details Define a reference frame and then an
inertial reference frame. Give example of both inertial and
non-inertial reference frames.

1. In one inertial reference frame, an electron is observed
traveling with a velocity of magnitude v in the positive
x-direction, where v is 0.6c. What are the momentum and total
energy of the electron in that inertial reference frame in terms of
v and the rest mass of the electron? What are the speed, momentum
and energy of that electron as measured in a reference frame that
is traveling at a velocity of magnitude v/2 in the positive
x-direction?...

Earth and Planet X are in the same inertial frame of reference.
In the Earth-Planet X reference frame the distance between Earth
and Planet X is 12 ly (light years). A spaceship travels at a
constant speed from Earth to Planet X. In the reference frame of
the spaceship, it takes 15 years to reach Planet X. What is the
speed of the spaceship relative to Earth(as a fraction of the speed
of light)?

Our usual frame of reference is the surface of the Earth, which
is actually a non-inertial reference frame since the Earth is
spinning! In other words we are constantly accelerating, since we
travel in a circle around Earth's rotation axis. For the questions
below assume the Earth is spherical with a radius of 3959 miles and
the latitude of Los Angeles is approximately 34°.
a) How much lighter will a scale read a 70 kg70 kg person's
weight standing at...

ane sets up two mirrors in her reference frame where mirror A is
located on the x-axis 100 m from the origin and mirror B is located
on the y-axis 100 m from the origin. She then causes a light
source, which is located at the origin and emits light uniformly in
all directions, to flash once at t=0.
(a) As measured in Jane's inertial frame, what is the time at
which the light flash reaches mirror A?
(b) As...

A rocket that is in deep space and initially at rest relative to
an inertial reference frame has a mass of 2.60 ✕ 105 kg, of which
1.92 ✕ 105 kg is fuel. The rocket engine is then fired for 250 s
while fuel is consumed at the rate of 480 kg/s. The speed of the
exhaust product relative to the rocket is 3.15 km/s.
After the 250 s firing, what is the speed of the rocket in
m/s?
Sample...

A spaceship with rest mass m0 is traveling with an
x-velocity V0x=+4/5 in the frame of the earth. It
collides with a photon torpedo (an intense burst of light) moving
in the -x direction relative to the earth. Assume that the ship's
shield totally absorbs the photon torpedo.
a)The oncoming torpedo is measured by terrified observers on the
ship to have an energy of 0.75m0. What is the energy of
the photon torpedo in the frame of earth?
b)Use convervation...

Special relativity problem
In inertial system S, events A and B have coordinates
xA = (2,0,0,1) xB = (1,0,0,3)
a) Show that there exists an inertia frame where the time
difference between the events can be any.
b) Show that there are inertia systems where the distance
between events can be as large as possible.
c) Find the distance that can be between the events and the
inertial system S' where the distance takes on this minimum
value

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