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4 years ago

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

1 answer:

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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A cylinder is filled with 10.0 L of gas and a piston is put into it. The initial pressure of the gas is measured to be 163. kPa.

alexgriva [62]

Answer:

P₂ = 370 kPa

Explanation:

Boyle's law: States that the volume of a given mass of gas is inversely proportional to its pressure provided the temperature remains constant. It can be expressed mathematically as,

P₁V₁ = P₂V₂................ Equation 1

Where P₁ = Initial Pressure, V₁ = Initial volume, P₂ = Final Pressure, V₂ = Final Volume.

Making P₂ The subject of the equation above,

P₂ = P₁V₁/V₂..................... equation 2

Substituting these vaues into equation 2,

Where P₁ = 163 kPa = 163000 pa, V₁ = 10 L, V₂ = 4.4 L.

P₂ = 163000(10)/4.4

P₂ = 370454.55 Pa

P₂ = 370000 Pa

P₂ = 370 kPa To 3 significant figure.

Therefore Final pressure = 370 kPa

6 0

3 years ago

A car can go from 0.0 m/s to 100m/s in 6 seconds. What is the acceleration

Mama L [17]

Answer:

100-0 / 6 = 16.66 m/s

Explanation:

acceleration = vf-vi / time

vf= 100m/s

vi= 0 m/s

t= 6s

7 0

3 years ago

Gnb technologies manufactures lead-acid batteries, and enlists ups for assistance with its supply chain. ups also helps the comp

Elza [17]

The company's method used in its marketing strategy as what is described in the description would be reverse logistics. In addition, a reverse logistics technique mainly involves re-using the company's products produced for the reason of properly disposing in, and could be used as another resource for future productions.

4 0

4 years ago

A rock is thrown upward from level ground in such a way that the maximumheight of its flight is equal to its horizontal rangeR.

Ne4ueva [31]

The range of a projectile motion is given by:

$\frac{u_o^2 sin2\theta}{g}$

where, $u$ is the initial speed of the projectile, $\theta$ is the angle of the projectile and $g$ is the acceleration due to gravity.

The maximum height reached is given by:

$\frac{u_o^2 sin^2\theta}{2g}$

Part a

It is given that the maximum height reached is equal to the horizontal range. we need to find the angle of the projectile.

Equating the two:

$\frac{u_o^2 sin2\theta}{g}=\frac{u_o^2 sin^2\theta}{2g}\\ \Rightarrow 2 sin2\theta =sin^2\theta\\ \Rightarrow 2\times 2 sin\theta cos\theta=sin^2 \theta\\ \Rightarrow tan\theta =4\\ \Rightarrow \theta=tan^{-1}4=75.96^o$

Hence, the projectile was thrown at an initial angle of $\theta=75.96^o$ .

Part b

we need to find the angle for which range would be maximum and then write this maximum range in terms of original range.

So, we know that range is given by:

$R= \frac{u_o^2sin2\theta}{g}$

It would be maximum when $sin2\theta=1\Rightarrow 2\theta=90^o\Rightarrow \theta=45^o$

Hence, $R_{max}=\frac{u_o^2}{g}$

Original range,

$R=\frac{u_o^2sin2\times75.96^o}{g}\\ \Rightarrow R=\frac{u_o^2}{g}\times 0.47\\ \Rightarrow R=R_{max}0.47\\ \Rightarrow R_{max}=2.125R$

Part c:

In the part a, we know that the angle of the projectile is independent of the $g$ i.e. the acceleration due to gravity and this is the only factor that varies with the different planets. Hence, the answer would remain same.

7 0

3 years ago

Air can be humidified by passing through a long tube whose inside diameter is lined with a wick saturated with liquid water. The

Oduvanchick [21]

Answer:

IV because the process of water is equal to 5,8 to 783253.23 to the hendroxagram of 4.

Explanation:

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3 years ago