A Proton,starting from Rest,accelerates Through a Potential Difference of 1 $\vec { B }$

question 74

Multiple Choice

A proton,starting from rest,accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the $\vec { B }$ field.What is the radius of the proton's resulting orbit? (e = 1.60 × 10^-19 C,m_proton = 1.67 × 10^-27 kg)

• A)0.080 m
• B)0.11 m
• C)0.14 m
• D)0.17 m

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Definitions:

William McDougall

A psychologist known for his work in social psychology and the concept of instinct theory of motivation.

Instincts

Innate, fixed patterns of behavior in response to specific stimuli.

Purposive

Having or serving a purpose; intentional or goal-oriented in nature.

Supernormal Stimulus

An exaggerated artificial stimulus that elicits a stronger response than the natural stimulus for which an organism is programmed.