Jane doe earns 85 on her math test. she earns 100 on homework. her teacher says that assignments are worth 90% of her grades, and homework is worth 10%. what is her grade in the class? show your work

Amachine, modeled as a simple spring-mass system, oscillates in simple harmonic motion. its acceleration is measured to have an amplitude of 5,000 mm/s with a fre- quency of 10 hz. compute the maximum displacement the machine undergoes during this oscillation.

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

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