Aperson standing in the ocean notices that after a wave crest passes by ten more crest pass in a time of 120s what is the frequency

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

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

How do you tell if someone actually cares about you? and just say they do?