The table below shows the right ascensions of two stars at a location. Name of star Right ascension
Star 1 2 hours
Star 2 4 hours 30 minutes

What is the interval between the times when the two stars rise at the location?

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

What are similarities and differences of reflection, refraction, diffraction and absorption?

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?