Alpha Particles, Each Having a Charge Of $+ 2 e$ And a Mass Of

question 139

Multiple Choice

Alpha particles, each having a charge of $+ 2 e$ and a mass of $6.64 \times 10 ^ { - 27 } \mathrm {~kg}$ , are accelerated in a uniform $0.50 \mathrm {~T}$ magnetic field to a final orbit radius of $0.50 \mathrm {~m}$ . The field is perpendicular to the velocity of the particles. What is the kinetic energy of an alpha particle in the final orbit? $( 1 \mathrm { eV } =$ $\left. 1.60 \times 10 ^ { - 19 } \mathrm {~J} , e = 1.60 \times 10 ^ { - 19 } \mathrm { C } \right)$

• A) \(3.0 \mathrm { MeV }\)
• B) \(4.3 \mathrm { MeV }\)
• C) \(3.4 \mathrm { MeV }\)
• D) \(2.6 \mathrm { MeV }\)
• E) \(3.9 \mathrm { MeV }\)

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Definitions:

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Kirk's Dik-dik

A small antelope species native to Eastern and Southern Africa, known for its distinctive snout and monogamous pair bonds.

Sexual Receptivity

The willingness and readiness of an organism, particularly females, to engage in mating behavior during specific periods.

Scent Marks

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