When using the right-hand rule to determine the direction of the magnetic force on a charge, which part of the hand points in the
direction that the charge is moving?

Aball bearing at 220.0 °c is dropped into a cup containing 250.0 g of water at 20.0 °c. the water and ball bearing come to a temperature of 30.0 °c. what is the heat capacity of the ball bearing in j/°c? (hint: how are the algebraic signs of q related for the ball bearing and the water? )

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

The substances that are necessary for producing of certain hormones and that store and transport vitamins