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:

Heart Muscle

Also known as myocardium, this is the muscular tissue of the heart responsible for its pumping action.

Inflammation

The body's response to injury, irritation, or infection, characterized by redness, warmth, swelling, and pain in the affected area.

Myocardial Infarction

A medical condition commonly known as a heart attack, resulting from the interruption of blood flow to part of the heart, causing heart cells to die.

Oxygen

A chemical element with symbol O, essential for respiration in most living organisms and used in various industrial applications; it is the most abundant element in the Earth's crust.