The Half- Life of a Radioactive Isotope Refers To

question 30

Multiple Choice

The half- life of a radioactive isotope refers to:

• A) the time it takes for half of the parent isotopes to decay to daughter isotopes.
• B) the time it takes for the ratio of parent to daughter isotopes to be 1:2 (half as many parent isotopes as daughter isotopes).
• C) one- half of the total lifespan of a parent isotope.
• D) the time it takes for the ratio of parent to daughter isotopes to be 2:1 (twice as many parent isotopes as daughter isotopes).

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Definitions:

Lateral Runout

The measure of variation in the rotational path of a wheel, tire, or brake disc around its central axis, which can cause vibrations.

Lack Parallelism

A term possibly relating to the misalignment of vehicle wheels, where two or more wheels are not parallel to each other, affecting the vehicle's handling and tire wear.

Fit to Remain

Suitable or adequate to continue in status, position, or condition, implying no need for significant alteration or replacement.

Rear Caliper Piston

A specific type of caliper piston located at the rear brakes, playing a vital role in the vehicle's stopping power by applying pressure to the brake pads.