Choose the One Alternative That Best Completes the Statement or Answers

question 9

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-A thermometer reading $11 ^ { \circ } \mathrm { C }$ is brought into a room with a constant temperature of $30 ^ { \circ } \mathrm { C }$ . If the thermometer reads $17 ^ { \circ } \mathrm { C }$ after 4 minutes, what will it read after being in the room for 7 minutes? Assume the cooling follows Newton's Law of Cooling:
$$\mathrm { U } = \mathrm { T } + \left( \mathrm { U } _ { \mathrm { O } } - \mathrm { T } \right) \mathrm { e } ^ { \mathrm { kt } } \text {. }$$
(Round your answer to two decimal places.)

• A) \(28.67 ^ { \circ } \mathrm { C }\)
• B) \(5.87 ^ { \circ } \mathrm { C }\)
• C) \(20.22 ^ { \circ } \mathrm { C }\)
• D) \(39.78 ^ { \circ } \mathrm { C }\)

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Definitions:

Refractory Periods

Periods immediately following an action potential during which a neuron is unable to fire another action potential or the firing rate is significantly reduced.

Calcium Channels

Ion channels in cell membranes that allow the movement of calcium ions into or out of a cell, playing key roles in various physiological processes.

Refractory Periods

Intervals following an action potential during which a neuron or muscle cell is less responsive to further stimulation.

Neuron

A nerve cell that is the basic building block of the nervous system, responsible for receiving and transmitting information.