How can Tina tell that electrical energy is flowing through a light bulb? A. She can read the words printed on the light bulb. B. She can see parts of the light bulb turning. C. She can feel radiant heat coming from the light bulb. D. She can hear the light bulb making music energy.

Which object is most likely represented by a dot?

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

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.