The Charcoal from Ashes Found in a Cave Gave 3

question 24

Multiple Choice

The charcoal from ashes found in a cave gave 3.34 14C counts per gram per minute. Wood from the outer portion of a growing tree gives a comparable count of 16.0. The half-life of 14C is 5700 years. How old are the ashes?

• A) 8.93 × 10³ yr
• B) 6.87 × 10³ yr
• C) 1.29 × 10⁴ yr
• D) 1.93 × 10⁴ yr
• E) 1.90 × 10⁴ yr

---

Definitions:

Heat Shrink Tubing

A type of tubing that shrinks in diameter when heated, used for insulating wires and protecting connections.

Electrical Tape

Insulating tape used to protect and insulate electrical wires and other materials that conduct electricity.

Electrostatic Discharge

The sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown.

DC Motors

Electric motors that run on direct current electricity, commonly used in various applications from small toys to large vehicles.