A galaxy has arms of gas and dust; where as galaxy is a category of galaxy that does not have a distinctive shape. Question 1 options:

elliptical, an elliptical

irregular, a barred-spiral

bar, a spiral

spiral, an irregular

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?