Observers in reference frame S see an explosion located at x1= 480 m. Asecond explosion occurs 5μs later at x2= 1200 m. In reference frame S′, which ismoving along the +xaxis at speedv, the explosions occur at the same point in space. What is the speed v

In our inertial reference frame, we see a particle accelerating with a velocity   dx/dt = ( 1 - e-gt )1/2 in units where c = 1 (speed of light)  When we watch the particle's trajectory from t=0 to t=T, how much time passes in the particle's non inertial frame? Now express the answer such that T and the time have units of seconds instead of meters What's the 4-velocity in units c=1?

cordinates in M

Which of the following inertial reference frames are proper frames for the two events listed? Choose all that apply. ORED FRAME: A particle traveling at a constant velocity decayed in 3.8 μs. Event A was when. came into being (when it was 'born') & event B was when it decayed (when it 'died'). □ ORANGE FRAME: Event C happened at (5 m, -9 m, -8 m) and event D happened at (-5 m, -0.9 m, -8 m). O YELLOW FRAME: The distance between where event E occurred and where event F occurred was 4 m. □ GREEN FRAME: A rocket was traveling at a constant velocity when it passed through a stationary tunnel. Event G was the front of the rocket entering the tunnel and event H was the the front of the rocket leaving the tunnel. BLUE FRAME: A stationary rocket was engulfed by a hollow cylinder that was moving at a constant velocity. Event J was the front of the rocket entering the cylinder and event K was the the front of the rocket leaving the cylinder.