You add fabric softener to your next load of wash. Your...

Name: Problem 67, Chapter 14: College Physics
Uploaded: 2020-05-22T18:39:08-08:00
Duration: 45 s
Channel: Dading Chen

You add fabric softener to your next load of wash. Your clothes do not cling after they emerge from the dryer. What do the water softener molecules do? (a) Carry away all the excess electrons. (b) Cause sparks in the dryer that discharge the excess charge on the clothes. (c) Form a protective coating that prevents the charge from joining the clothes. (d) Make the cloth fluffy so the charge comes off naturally. (e) Join the cloth molecules and make a conductive layer that prevents excess charge from accumulating on the clothes.

You add fabric softener to your next load of wash. Your clothes do not cling after they emerge from the dryer. What do the water softener molecules do?
(a) Carry away all the excess electrons.
(b) Cause sparks in the dryer that discharge the excess charge on the clothes.
(c) Form a protective coating that prevents the charge from joining the clothes.
(d) Make the cloth fluffy so the charge comes off naturally.
(e) Join the cloth molecules and make a conductive layer that prevents excess charge from accumulating on the clothes.

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Key Concepts

Electrostatic Charging

When objects come into contact and then separate, friction can result in the transfer of electrical charge, creating an imbalance known as static electricity. This phenomenon is responsible for effects like static cling, where charged surfaces attract each other due to imbalances in electrons.

Surface Coatings in Materials Science

A thin film or coating applied to the surface of a material can alter its interactions with its environment. In the context of static electricity, a properly applied coating can inhibit the accumulation or retention of electrical charges, thereby reducing unwanted effects such as clinging.

Surfactants and Their Function

Surfactants are molecules that have both hydrophilic (water-attracting) and hydrophobic (water-repelling) components, allowing them to adhere to surfaces and form uniform, protective layers. This coating can prevent the build-up of static charge by providing a barrier that limits the transfer and accumulation of electrons.

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