A Bar (L = 80 Cm) Moves on Two Frictionless

question 47

Multiple Choice

A bar (L = 80 cm) moves on two frictionless rails, as shown, in a region where the magnetic field is uniform (B = 0.30 T) and into the paper. If v = 50 cm/s and R = 60 mΩ, what is the magnetic force on the moving bar?

• A)0.48 N to the right
• B)0.48 N to the left
• C)0.32 N to the left
• D)0.32 N to the right
• E)None of the above

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Definitions:

Context-Dependent Memory

The theory that information learned in a particular situation or place is better recalled when the context at the time of memory retrieval matches the original learning environment.

Memory Consolidation

The process by which short-term memories are transformed into long-term memories.

Long-Term Potentiation

An enduring increase in signal transmission between two neurons that results from stimulating them synchronously, believed to be a cellular mechanism for learning and memory.

Classically Conditioned Associations

Refers to the learning process that occurs when two stimuli are repeatedly paired together; a response that is at first elicited by the second stimulus is eventually elicited by the first stimulus alone.