You observe two stars in the sky and measure their angular distance as 60 degrees. how many arc seconds is this angular distance?

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?

In the first law of thermodynamics, triangle e=q-w, what does q stand for

If a simple machine reduces the strength of a force, what must be increased?