
Concept explainers
(a)
The average speed of the signal.
(a)

Answer to Problem 86P
The average speed of the signal is
Explanation of Solution
Write the equation for average speed of the signal.
Here,
Conclusion:
Substitute
Solve the above relation for velocity in terms of millimetre seconds.
Therefore, the average speed of the signal is
(b)
The time taken by the signal to reach the brain.
(b)

Answer to Problem 86P
The time taken by the signal to reach the brain is
Explanation of Solution
Write the equation for time taken by the signal to the neuron.
Here,
Write the equation for the total time travel across the synapses and neuron to reach the brain.
Here,
Rewrite the equation (III).
Conclusion:
Substitute
Substitute
Therefore, the time taken by the signal to reach the brain is
(c)
The average speed of propagation of signal.
(c)

Answer to Problem 86P
The average speed of propagation of signal is
Explanation of Solution
Write the equation for average speed of the signal.
Here,
Conclusion:
Substitute
Solve the above relation for velocity.
Therefore, the average speed of propagation of signal is
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Chapter 2 Solutions
Physics
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