Jonathan throws an apple straight up (in a positive direction), reaching a maximum height of 30 meters. neglecting air resistance, what is the ball's velocity just when it leaves jonathan's hand?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)

Aheavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80hz. what is the mass of the sculpture?