Anna was usually quiet and shy at home with her six brothers and sisters, so her mom was surprised when her teacher described her as outgoing and chatty at school. The best possible explanation for the difference in behavior is . trait perspective trait expression personality type personality abnormality

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?