Physics, 31.08.2019 03:30 alexandria3498
Derive an expression relating the time interval measured by a clock in its rest frame and the time interval measured in a frame in which the clock is moving with velocity v (lorentz factor γ) 5 marks 4b) consider the radiation emitted by a quasar jet that is moving with a velocity u at an angle θ to the line of sight toward the earth. show that the observed apparent speed of a blob moving along the jet bapp in the plane of the sky (on the celestial sphere) is given by sin θ app where b is u/c. (4c) show that the maximum apparent speed is observed when the angle between the jet's motion and the line of sight toward the earth is given by cos - (4d) a blob in the jet of a quasar has been observed to move on the celestial sphere with an apparent angular speed of 3.2 x 104 arcseconds/year. the distance of the quasar is 1576 mpc. what is the value of bapp for this motion?
Answers: 3
Physics, 22.06.2019 01:30, kaylin28
Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33
Answers: 2
Physics, 22.06.2019 14:00, meleaallison
Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s
Answers: 2
Physics, 22.06.2019 15:00, hma9153
Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.
Answers: 1
Derive an expression relating the time interval measured by a clock in its rest frame and the time i...
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