Grinding wheat into flour is a. a. physical change b. chemical change

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?