angelinaavila06

21.11.2020 • 

Chemistry

First row: Quality of light, Phosphors have a narrow frequency range in comparison to a high spectrum incandescent. Adding phosphors to help the light quality adds cost and loss of efficiency. Second row: Size, C F L's are larger than their incandescent counterparts. They may not fit in the existing light fixtures. Third row: Electronics, Using C F L's with a dimmer can short the shelf life. Fourth row: Heat, Higher luminosity C F L's can get warm. They should not be run with the electronics (ballast) above the tube. Therefore, they cannot be used for pendant or recessed lights. What is the purpose of this table?
a.
To explain the benefits of a CFL
c.
To explain the benefits of an incandescent bulb.
b.
To outline the higher costs of an incandescent bulb.
d.
to explain the drawbacks of a CFL

Ответ:

babygirl091502

24.05.2020

Chemistry

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A physical change is a change in form.

A Chemical change is a change in materials.

Explanation:

Example of a physical change would be an ice cube meting.

Example of a chemical change would be mixing food coloring into a cup of water.

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