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maksim [4K]
3 years ago
15

Name 3-4 objects you use that depend on the electromagnetic spectrum.

Physics
2 answers:
iVinArrow [24]3 years ago
7 0

Answer:

3 objects that depend on the electromagnetic spectrum would be television, radios, and the Microwave. This is due to the fact that radio waves depend on the electromagnetic spectrum and televisions and radios require radio waves. The microwaves also depend on the electromagnetic spectrum in order to make the Mircowave work

Explanation:

Harman [31]3 years ago
5 0

Things I personally use:

-- my eyes

-- my smartphone

-- my garage door opener

-- my TV;  also the TV remote

-- stove

-- microwave oven

-- toaster

-- night light

-- CD player

-- FM radio

-- car headlights

-- traffic stoplights

-- flashlight

-- telescope

-- binoculars

-- film camera

-- digital camera

-- GPS receiver

-- infrared thermometer

Things I don't personally use but are used by other people:

-- police radios

-- firemen's radios

-- EMT's ambulance radios

-- taxi drivers' radios

-- dentist's X-ray machine

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<h3>What is temperature?</h3>

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Briefly describe the formation of the planets from the solar nebula
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3 years ago
How much work is done on a satellite in a circular orbit about earth?
alexgriva [62]

Answer:

0 J

Explanation:

W = Work done on the satellite in circular orbit about earth by earth

F = Force on gravity on satellite by earth

d = displacement of the satellite

\theta = Angle between the force on gravity and displacement = 90

We know that, Work done is given as

W = F d Cos\theta\\W = F d Cos90\\W = F d (0)\\W = 0 J

3 0
3 years ago
You are trying to hear your friend give directions to new store in town. But from your distance (1 point) of 15 m you only hear
Marat540 [252]

Answer:

option D

Explanation:

given,

Intensity of sound = 20 dB

distance = 15 m

intensity of sound is increased to = 50 dB

distance between the sound level = ?

Using relation

L_2 = L_1 - |20(log \dfrac{r_2}{r_1})|

L₁ = 20 dB        L₂ = 50 dB         r₁ = 15 m      r₂ = ?

log (\dfrac{r_2}{r_1}) = \dfrac{L_1 -L_2}{20}

\dfrac{r_2}{r_1}= 10^{\dfrac{|L_1 -L_2|}{20}}

r_2 =r_1 10^{\dfrac{|L_1 -L_2|}{20}}

r_2 =15 \times 10^{\dfrac{|20-50|}{20}}

r_2 =15 \times 10^{-1.5}

r₂ = 0.47 m

r₂ = 47 cm

hence, the correct answer is option D

7 0
4 years ago
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