The brightest star in the night skyis sirius

Assignment Help Physics

Reference no: EM13563942

The brightest star in the night skyis Sirius, which is at a distance of 8.30×1016 m.When we look at this star, how far back in time are we seeing it?Express your answer in years.

Reference no: EM13563942

Questions Cloud

How much time would he spend off the lunar surface : An Olympic long jumper jumps 8.04m, reaching a height of 0.80 m halfway through his jump. What was his velocity as he left the ground? Also, how far would he be able to jump on the moon (g=1.63 N/kg) and how much time would he spend off the lunar sur..

Find therest energy and the speed of the new particle : Two particles collide and stick together to form a new particle.First particle has a rest energy E0 and a kinetic energy 2E0.Second particle is stationary and has a rest energy 2Eo. Find therest energy and the speed of the new particle.

What is the maximum current in the circuit : An emf of 20 V maximum and frequency 18 Hz is applied to a24-mF capacitor. What is the maximum current in the circuit?

What is the rms current through the circuit element : An AC generator is connected across a single circuit element and supplies a peak voltage of 250 V. The peak current through the element is 6.1 A. What is the rms current through the circuit element?

The brightest star in the night skyis sirius : The brightest star in the night skyis Sirius, which is at a distance of 8.30×1016 m.When we look at this star, how far back in time are we seeing it?Express your answer in years.

How long will it take the astronaut to reach the ship : A 66.0 kg astronaut is stranded at a distance of 12.0m from his ship in free space. In order to get back to the ship, he throws a0.50 kg piece of equipment with a speed of 4.0 m/s directly awayfrom the space ship. How long will it take the astronaut ..

What angle should the normal to the surface of the mirror : In an experiment designed to measure the speed of light, a laser is aimed at a mirror that is 49.0 km due north. A detector is placed105 m due east of the laser. The mirror is to be aligned so thatlight from the laser refelects into the detector

Consider elastic collision-find the queue balls angle : Consider an elastic collision (ignoring friction and rotational motion). A queue ball initially moving at 2.9 m/s strikes a stationary eight ball of the same size and mass. After the collision, the queue ball’s final speed is 1 m/s. Find the queue ..

What is the speed of package before it reaches the spring : A 2.00-kg package is released ona 53.1o incline, 4.00 m from a longspring with force constant 120 n/m that is attached at the bottom of the incline . The coefficients of friction between the package and the incline are static frictionis 0.4 and ki..

User Account

All Pages