In a Particle Accelerator, Protons Are Fired at a Stationary

question 19

Multiple Choice

In a particle accelerator, protons are fired at a stationary target and collide elastically with the nuclei of the atoms in the target. In one such experiment, a beam of protons is fired with a speed of 2.10 × 10⁷ m/s. The protons that undergo a collision rebound with a speed of 1.68 × 10⁷ m/s. What is the mass of the nuclei that the protons are colliding against?

• A) 6.00 proton masses
• B) 7.00 proton masses
• C) 8.00 proton masses
• D) 9.00 proton masses
• E) 10.0 proton masses

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Definitions:

Frequency

The rate at which a cyclic or periodic event occurs, typically measured in cycles per unit time.

Timbre

The characteristic of a sound that makes it identifiable from other sounds with the same pitch and loudness.

Purity

The state or quality of being clean, free from contaminants, or morally untarnished.

Variation in Contrast

Differences in the degree of distinction between two or more elements, often used in visual and language analysis.