In a Laboratory Experiment,a Student Brings Up the Rotational Speed

question 59

Multiple Choice

In a laboratory experiment,a student brings up the rotational speed of a flywheel to 30.0 rpm.She then allows it to slow down on its own,and counts 240 revolutions before the apparatus uniformly comes to a stop.The moment of inertia of the flywheel is 0.0850 kg ∙ m².What is the magnitude of the retarding torque on the flywheel?

• A)0.0425 N ∙ m
• B)0.159 N ∙ m
• C)0.0787 N ∙ m
• D)0.000278 N ∙ m
• E)0.0000136 N ∙ m

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Definitions:

Serotonin

A neurotransmitter that plays a significant role in mood regulation, digestion, and sleep, among other bodily functions.

Dopamine

Dopamine is a neurotransmitter involved in many functions, including motivation, pleasure, cognition, memory, learning, and fine motor control.

Neurogenesis

The process of generating new neurons in the brain, which continues in certain brain regions throughout adulthood in humans.

Brain-derived Neurotropic Factor

A protein in the brain and peripheral nervous system that supports the survival of existing neurons and encourages the growth and differentiation of new neurons and synapses.