You would expect to find the least number of young O, B stars in the

nucleus

spiral arms

disk

halo

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

The smallest particle of an element that retains its identity in a chemical reaction. true or false

At what time would the magnitude of the velocity reach 36.00 km/hr