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Lyrx [107]
3 years ago
6

What are some ways to conserve electricity

Physics
2 answers:
emmasim [6.3K]3 years ago
7 0
Turn off lights when leaving rooms.

Unplug unused appliances. Even when powered off these appliances use electricity.

Replace regular light bulbs with energy saving bulbs.
Natali [406]3 years ago
6 0
-- Turn off the lights when you leave a room.

-- Use "energy efficient" appliances and low-energy lights.

-- Go to bed when the sun sets & get up when it rises.
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A person shouting at the top of his lungs emits aboue 1.0 w of energy as sound waves. What is the sound intensity 1.0 m from suc
umka21 [38]

Answer:

I=0.0795\ W/m^2

Explanation:

When a person shouts it emits 1 W of energy as sound waves, P = 1 W

Let I is the sound intensity 1 meters from such a person. We know that the power per unit area is called the sound intensity of the person. Its formula is given by :

I=\dfrac{P}{A}

I=\dfrac{P}{4\pi r^2}

I=\dfrac{1\ W}{4\pi (1\ m)^2}  

I=0.0795\ W/m^2

So, the sound intensity of such a person is 0.0795\ W/m^2. Hence, this is the required solution.

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