Physics

Physics, 30.10.2019 10:31, Gerber7778

List several examples that show how electrical energy and light energy are useful to you

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Physics, 30.07.2019 22:30, slowik9467

a student needs completing an energy transfer diagram for a ceiling fan. which best fills in the blanks labeled m and n to describe the transfer of energy? a)n: electrical and m: potential energy b)n: light energy and m: electrical energy c)n: electrical energy and m: kinetic energy d)n: mechanical energy and m: electrical energy

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Chemistry, 02.08.2019 20:00, shanewugden7362

You turn on a lamp.the amount of light energy released by the light bulb is less than the amount of electrical energy that flows into the lamp.what is the reason for the difference? a)some electrical energy is converted to heat b)some electrical energy converted to potential energy c)some electrical energy is destroyed d)some electrical energy is turned into matter

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Physics, 11.09.2019 17:30, mackdoolittle1

According to the law of conservation of energy, energy is not created or destroyed. it changes form or is transformed. what energy transformation(s) is/are depicted here? a) electrical energy ⇒ light energy b) potential energy ⇒ kinetic energy ⇒ light energy c) chemical energy ⇒ electrical energy ⇒ light energy d) chemical energy ⇒ electrical energy ⇒ heat and light energy

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Physics, 29.10.2019 19:31, marcy2215

Light bulbs transform electrical energy to light energy. no energy transformation is 100%. thus, in the transfer from electrical energy to light energy, some energy is dissipated as heat. the efficiency of an electrical device depends on: 1. how much energy is wasted ‐ transferred to unwanted stores 2. how much energy is transferred to useful stores the more energy a device wastes, the less efficient it is. the graph shows the efficiency of three types of light bulbs: incandescent, fluorescent, and led. what can you conclude about the energy efficiency of the light bulbs?

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