The Asteroid Belt Has a Gap Where Few Objects Are

question 64

Multiple Choice

The asteroid belt has a gap where few objects are found because of repeated gravitational disturbances from Jupiter.At what distance from the Sun will this gap be found if objects in the gap have a period one- third that of Jupiter? (Hint: Use Kepler''s law.)

• A) 7.86 AU
• B) 3.28 AU
• C) 2.5 AU
• D) 2.6 AU

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Definitions:

L-DOPA

A chemical precursor of dopamine used as a medication to treat Parkinson's disease and dopamine-responsive dystonia due to its ability to cross the protective blood-brain barrier.

MPTP

A prodrug to the neurotoxin MPP+, which causes permanent symptoms of Parkinson's disease by destroying dopaminergic neurons in the brain.

Epinephrine

Also known as adrenaline, it is a hormone and neurotransmitter that plays a critical role in the body's fight-or-flight response.

Stimulant Drugs

Substances that increase alertness, attention, and energy by elevating the levels of key neurotransmitters in the brain.