The Short Lifetime of Muons Created in the Upper Atmosphere

question 18

Multiple Choice

The short lifetime of muons created in the upper atmosphere of the Earth would not allow them to reach the surface of the Earth unless their lifetime increased by time dilation. From the reference system of the muons, the muons can reach the surface of the Earth because:

• A) time dilation increases their energy.
• B) time dilation increases their velocity.
• C) the relativistic speed of the Earth toward them is added to their velocity.
• D) length contraction decreases the distance to the Earth.

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Definitions:

Quantity Demanded

The amount of a product or service consumers are willing and able to buy at a given price over a specified period of time.

Unit Elasticity

Demand or supply for which the elasticity coefficient is equal to 1; means that the percentage change in the quantity demanded or quantity supplied is equal to the percentage change in price.

Quantity Demanded

The total amount of goods or services that consumers are willing and able to purchase at a given price.

Price Elasticity

The degree to which demand for an item is affected by changes in its cost.