Cosmic Rays Come Mostly from Extragalactic Sources and Contribute Little

question 87

True/False

Cosmic rays come mostly from extragalactic sources and contribute little to the overall energy balance in the Milky Way disk.

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Definitions:

Efficiency

The extent to which resources are used optimally to achieve the desired outputs with minimum waste or effort.

Production Possibilities Frontier

A curve depicting all maximum output possibilities for two goods, given a set of inputs consisting of resources and other factors.

Marginal Cost

The cost incurred by producing one additional unit of a product.

Concave

A shape or curve that is curved inward, resembling the interior of a circle or sphere.