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Vikentia [17]
3 years ago
15

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? A) Incandescent light bulbs use less energy than either LED or fluorescent bulbs. B) Fluorescent light bulbs are the most energy efficient since their light and heat energy are most equal. C) Incandescent light bulbs rely on heat energy to process light, increasing the light output while decreasing the heat output. D) LED light bulbs provide more light energy while producing less heat energy, making them the most energy efficient of the three types of bulbs.
Chemistry
2 answers:
-Dominant- [34]3 years ago
8 0

Answer:

b got it right on the test

Explanation:

arlik [135]3 years ago
7 0

Answer: a

Explanation: usa test prep said it was right

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Is it really possible for humans not to alter the natural world around them?
tankabanditka [31]

Answer: I'm sure it's possible but we too lazy

Explanation:

6 0
3 years ago
The equilibrium for the indicator methyl orange is HC14H14SO3(red) + H2O C14H14SO3−(yellow) + H3O+ The reaction is exothermic.
muminat

Answer:

The solution will turn red.  

Explanation:

HC₁₄H₁₄SO₃ + H₂O ⇌ HC₁₄H₁₄SO₃⁻ +H₃O⁺

     (red)                           (yellow)

Methyl orange is a weak acid in which the ionized and unionized forms are distinct colours and are in equilibrium with each other,

At about pH 3.4,  the two the forms are present in equal amounts, and the indicator colour is orange.

If you add more acid, you are disturbing the equilibrium.

According to Le Châtelier's Principle, when you apply a stress to a system at equilibrium, it will respond in such a way as to relieve the stress.

The system will try to get rid of the added acid, so the position of equilibrium will move to the left.

More of the unionized molecules will form, so the solution will turn red.

 

4 0
3 years ago
Write a hypothesis:<br> What is the mole ratio of the cation and the anion in a precipitate?
tankabanditka [31]

Answer:

The mole ratio of the cation and the anion in a precipitate is a simple fraction. ( im sorry if this dosent help a lot.)

Explanation:

8 0
3 years ago
The chart below lists data on four different projects designed to restore a wetlands habitat destroyed by human activity and a r
snow_lady [41]

Answer:

Project 3.

Explanation:

Project 3's anticipated cost is 12 to 17 million dollars. It is a <em>lower </em>anticipated cost than Project 2 and Project 4, but <em>higher</em> than Project 1 by one million dollars at maximum cost anticipation. Additionally, the percentage of wildlife to benefit is 70-80%, which is <em>second</em> to the most wildlife to benefit which is Project 4 at 75-80%.

And finally, for community support for Project 3 - the chart lists it as high. This outclasses Project 2 and Project 4, but balances with Project 1. However, Project 1 costs 13 to 16 million dollars and <em>only</em> benefits 15-25% of wildlife.

5 0
2 years ago
How is the weathering of rocks by water different from the weathering of rocks by ice?
andrey2020 [161]

Answer:

It is because water is liquid and it can be weathered easily. While weathering by solid is a bit dangerous because of its hardness.

Explanation:

4 0
2 years ago
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