Polonium-208 Is an Alpha Emitter with a Half-Life of 2

question 61

Multiple Choice

Polonium-208 is an alpha emitter with a half-life of 2.90 years. How many milligrams of polonium from an original sample of 2.00 mg will remain after 8.00 years

• A) 0.147 mg
• B) 0.296 mg
• C) 0.725 mg
• D) 6.77 mg
• E) 1.90 mg

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Definitions:

Hydraulic Brake System

A system in vehicles that uses fluid pressure to operate the brakes.

Rear Wheel Lock-up

A condition in braking where the rear wheels of a vehicle stop rotating and skid, often due to excessive brake force or poor road conditions.

Master Cylinder Bore

The internal diameter of the master cylinder in a vehicle's brake system, which affects the hydraulic pressure and, ultimately, the braking force.

Crocus Cloth

A very fine, abrasive cloth used for polishing metal surfaces, often utilized in metalworking and finishing applications.