A Subatomic Particle X Spontaneously Decays into Two Particles, a and B

question 43

Multiple Choice

A subatomic particle X spontaneously decays into two particles, A and B, each of rest energy 1.40 × 10² MeV. The particles fly off in opposite directions, each with speed 0.827c relative to an inertial reference frame S.
-Determine the kinetic energy of particle B (relative to frame S) .

• A)109 MeV
• B)140 MeV
• C)206 MeV
• D)249 MeV
• E)314 MeV

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Definitions:

Z Scores

A metric that measures the number of standard deviations a data point is from the mean of the dataset.

Percentage

A proportion or share expressed as a fraction of 100, used to denote the relative size or magnitude of a part compared to the whole.

Symmetrical

In statistics, it describes a situation where the data distribution is evenly spread around the mean, having a balanced shape on either side.

Normal Curve

A bell-shaped curve that represents the distribution of many types of data where most values cluster around a mean.