Two people are talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1 x 10 -7 W/m 2. Another student is 4.0 m away from the talkers. What sound intensity does the other student measure

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?