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3 years ago

Cellular telephones use what type of wave?

2 answers:

4 0

Cellphones use radio frequency waves to transmit sound through the speaker and the microphone. The radio frequency energy that is given off by cell phones is a type of electromagnetic energy.
I hope I helped! =D

GenaCL600 [577]3 years ago

4 0

Cellular telephones use radio frequency waves

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Lapatulllka [165]

Detergents are special, powerful cleansers that can break up dirt, oils, and grease in clothing or on dishes.

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2 years ago

An observer stands 24.7 m behind a marksman practicing at a rifle range. The marksman fires the rifle horizontally, the speed of

GaryK [48]

Explanation:

The given data is as follows.

Velocity of bullet, $c_{p}$ = 814.8 m/s

Observer distance from marksman, d = 24.7 m

Let us assume that time necessary for report of rifle to reach the observer is t and will be calculated as follows.

t = $\frac{24.7}{343}$ (velocity in air = 343 m/s)

= 0.072 sec

Now, before the observer hears the report the distance traveled by the bullet is as follows.

$d_{b} = c_{b} \times t$

= $814.8 \times 0.072$

= 58.66

= 59 (approx)

Thus, we can conclude that each bullet will travel a distance of 59 m.

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3 years ago

The diagram shows the apparent motion of the Sun across the sky. EAST WEST Sunrise Which action causes the Sun to appear to move

Andreas93 [3]

C. West to east is the correct answer

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3 years ago

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When the temperature of a metal cylinder is raised from 0.0°C to 110°C, its length increases by 0.22%. Find the percent change i

monitta

Volume of cylinder = pi*r*2*L

As, from the above formula,volume is directly proportional to length,
So, if we increase in length also increases in volume by 0.22%

we know

density=mass/volume

As, density is inversely proportional to volume it means increasing in volume decreases the density by 50.22%

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3 years ago

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if you were to draw a 3rd harmonic of a tube open at both ends, what would you draw at the ends of the tube?

Katena32 [7]

A 3rd harmonic of a tube open at both ends will have displacement antinodes at both ends.

In a tube of length L with two open ends, the longest standing wave has displacement antinodes (pressure nodes) at both ends. The fundamental or first harmonic is what it is known as. The second harmonic is the longest standing wave in a tube of length L with two open ends.

Learn more about harmonics here brainly.com/question/17315536

#SPJ10

7 0

2 years ago