A Proton Is Moving at 3

question 19

Multiple Choice

A proton is moving at 3.0 × 10⁶ m/s and experiences a magnetic force of magnitude 2.5 × 10⁻¹⁶ N. If the magnetic field makes an angle of 40° with respect to the velocity of the proton, what is the field's magnitude?

• A) 1.7 × 10⁻⁴ T
• B) 3.3 × 10⁻⁴ T
• C) 4.1 × 10⁻⁴ T
• D) 8.1 × 10⁻⁴ T
• E) 1.6 × 10⁻³ T

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Definitions:

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The degree to which a test predicts or correlates with a specific outcome or behavior it is designed to assess.

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An English polymath who made significant contributions to the fields of statistics, psychology, and biometrics, and is known for his research into the measurement of human intelligence and the concept of eugenics.

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