A Proton Moving with a Velocity Of $4.0 \times 10 ^ { 4 } \mathrm {~m} / \mathrm { s }$

question 70

Multiple Choice

A proton moving with a velocity of $4.0 \times 10 ^ { 4 } \mathrm {~m} / \mathrm { s }$ enters a magnetic field of $0.20 \mathrm {~T}$ . If the angle between the velocity of the proton and the direction of the magnetic field is $60 ^ { \circ }$ , what is the magnitude of the magnetic force on the proton? $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } \right)$

• A) \(0.60 \times 10 ^ { - 15 } \mathrm {~N}\)
• B) \(2.2 \times 10 ^ { - 15 } \mathrm {~N}\)
• C) \(1.1 \times 10 ^ { - 15 } \mathrm {~N}\)
• D) \(3.3 \times 10 ^ { - 15 } \mathrm {~N}\)
• E) \(1.8 \times 10 ^ { - 15 } \mathrm {~N}\)

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Definitions:

Relative Risk

A measure used in epidemiology to compare the risk of a certain event occurring in one group with the risk of it occurring in another group.

Sunscreens

Products applied to the skin to protect it from the harmful effects of UV radiation.

Epidemiologic Study

Research investigating the patterns, causes, and effects of health and disease conditions in defined populations.

Incidence

The occurrence, rate, or frequency of a disease, crime, or something else undesirable within a specified time frame.