Find the gravitational potential energy of a 2kg ball that is 10m off the ground.

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?

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

What is the single most important equation in all of physics?