Ineed halp (probably easy)
what are the parts of a pendulum? describe each one.
brainliest for best answer!

There is the length of the string, the bob ( anything weighed at the end of the string).  A pendulum works off of gravity and the Earth's rotation. I really tried so please give it to me. Everyone else will prob. Google it.

coil wire, increase current, put iron inside the coil

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."