Kepler's Second Law Says That If a Planet Is in an Elliptical

question 83

Multiple Choice

Kepler's second law says that if a planet is in an elliptical orbit around a star, then the planet moves fastest when the planet is:

• A) farthest from the star
• B) closest to the star
• C) exceeding the escape velocity
• D) experiencing zero acceleration
• E) located at one of the foci

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Definitions:

Reuptake

A process by which neurotransmitters are absorbed back into a neuron after having been released into a synapse, thus terminating the transmission of signals.

Excitatory PSPs

Excitatory postsynaptic potentials are increases in potential that bring a neuron closer to the threshold for firing, facilitating the transmission of signals.

Inhibitory PSPs

Post-synaptic potentials that make a post-synaptic neuron less likely to generate an action potential.

Absolute Refractory Period

A period immediately following the firing of a nerve fiber when it cannot be stimulated for a brief period, regardless of how strong the incoming stimulus may be.