A Refrigerator Has a COP of 2

question 3

Short Answer

A refrigerator has a COP of 2.5. If it removes 7.7 MJ of heat in 25. minutes,
(a) what is the minimum power motor to operate the refrigerator?
(b) what is its efficiency if it were a reversible engine?

Acknowledge the existence of sleep disorders and their impact on daily life.

Recognize the influence of neural and physiological processes on conscious and unconscious behaviors.

Understand the concept and examples of circadian rhythms.

Comprehend the psychological phenomenon of spatial neglect and its implications.

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Definitions:

Plasma Membrane

This is a protective double lipid layer encasing the cytoplasm of a cell, overseeing the transportation of substances across the cell boundary.

Membrane Potential

The electric potential difference across a cell's plasma membrane, crucial for the transmission of nerve impulses and muscle contraction.

Local Potential

A reversible, localized change in the electrical potential of a neuron's membrane, which can lead to an action potential if a certain threshold is reached.

Depolarization

A reduction in the difference in electric charge across a cell membrane, which is essential for generating action potentials in neurons and muscle cells.