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arlik [135]
3 years ago
12

(Brainliest) How are radio waves used in cell phone wireless communication technology?

Physics
1 answer:
poizon [28]3 years ago
5 0

Radio waves are used in cell phone wireless communication by this: Radio waves are released from the cell phone and travel to satellites in the stratosphere. After they reach the satellite, they are redirected to the recipient of the call/text.

Hope this helps! Can I have brainliest please?

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You pour 250 g of tea into a Styrofoam cup, initially at 80∘C and stir in a little sugar using a 100-g aluminum 20∘C spoon and l
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To solve this problem it is necessary to apply the concepts related to the conservation of energy and heat transferred in a body.

By definition we know that the heat lost must be equal to the heat gained, ie

Q_g = Q_l

Where,

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The heat exchange is defined as

Q = c_p m \Delta T

Where,

c_p = Specific heat

m = mass

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Therefore replacing we have that

Q_g = Q_l

c_{p-tea} m \Delta T =  c_{p-al} m \Delta T

Replacing with our values we have that

0.25*4180*(80-T) = 0.1*900*(T-20)

11.61*(80-T) = T-20

T= \frac{948.8}{11.61}

T = 75.24\°C

Therefore the highest possible temperature of the spoon when you finally take it out of the cup is 75.24°C

3 0
3 years ago
Tyler wants to learn about the types of insects in the soil near his house. Which would be a benefit of carrying out a descripti
lara31 [8.8K]
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8 0
3 years ago
Huryyy
zmey [24]
The transfer is perpendicular

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3 0
3 years ago
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[03.02]
Eddi Din [679]

Answer:

Decrease the voltage,and do not change the resistance,the current will also decrease

Explanation:

Decrease the voltage,and do not change the resistance, the current will also decrease, because voltage is directly proportional to current

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Answer:

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