Assume You Want to Deduce the Radius of a Planet

question 21

Multiple Choice

Assume you want to deduce the radius of a planet in our Solar System as it occults a background star when the relative velocity between the planet and the Earth is 30 km/s. If the star crosses through the middle of the planet and disappears for a total of 26 minutes, what is the planet's radius?

• A) 3,000 km
• B) 23,000 km
• C) 15,000 km
• D) 5,000 km
• E) 31,000 km

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Definitions:

Early Exposure

The experience or introduction to diverse stimuli or environments at a young age, influencing future behavior and development.

Myelin

A fatty substance that encases and protects nerve fibers, facilitating the rapid transmission of electrical signals along the nervous system.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell.

Fatty Substance

Any of various natural oily or greasy substances occurring in plants and animals, used by the body for energy, heat, and as a component of cell membranes.