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How does cellphoe service compare between different cities? table 3 represent the rating of verizon and at&t in 22 different

Alex Ar [27]

<span>Cell phone services can be compared through several characteristic. The rate of the data transfer: the higher the rate the better the service, the availability- the percent of the time the service is available (the greater the percent the better the service) and the reliability, which means that the service is non interrupted.</span>

4 0

3 years ago

How can you remember meiosis 1 and meiosis 2

Marianna [84]

Answer:

Once you know the differences between meiosis 1 and 2, you will remember it easier.

Explanation:

Meiosis 1 starts with 1 diploid cell Meiosis 2 starts with 2 haploid cells,

each with a homologous pair

Meiosis 1 results in 2 daughter cells Meiosis 2 results in 4

7 0

3 years ago

One end of a string is fixed. An object attached to the other end moves on a horizontal plane with uniform circular motion of ra

sveticcg [70]

Answer:

If both the radius and frequency are doubled, then the tension is increased 8 times.

Explanation:

The radial acceleration ( $a_{r}$ ), measured in meters per square second, experimented by the moving end of the string is determined by the following kinematic formula:

$a_{r} = 4\pi^{2}\cdot f^{2}\cdot R$ (1)

Where:

$f$ - Frequency, measured in hertz.

$R$ - Radius of rotation, measured in meters.

From Second Newton's Law, the centripetal acceleration is due to the existence of tension ( $T$ ), measured in newtons, through the string, then we derive the following model:

$\Sigma F = T = m\cdot a_{r}$ (2)

Where $m$ is the mass of the object, measured in kilograms.

By applying (1) in (2), we have the following formula:

$T = 4\pi^{2}\cdot m\cdot f^{2}\cdot R$ (3)

From where we conclude that tension is directly proportional to the radius and the square of frequency. Then, if radius and frequency are doubled, then the ratio between tensions is:

$\frac{T_{2}}{T_{1}} = \left(\frac{f_{2}}{f_{1}} \right)^{2}\cdot \left(\frac{R_{2}}{R_{1}} \right)$ (4)

$\frac{T_{2}}{T_{1}} = 4\cdot 2$

$\frac{T_{2}}{T_{1}} = 8$

If both the radius and frequency are doubled, then the tension is increased 8 times.

5 0

3 years ago

In Ptolemy's Earth-centered model for the solar system, Venus's phase is never full as viewed from Earth because it always lies

tiny-mole [99]

<h2>Answer: in full phase</h2>

Explanation:

Galileo observed that Venus presented phases (such as those of the moon) together with a variation in size; observations that are only compatible with the fact that <u>Venus rotates around the Sun and not around Earth. </u>

This is because Venus presented <u>its smaller size when it was in full phase and the largest size when it was in the new one</u>, when it is between the Sun and the Earth.

In other words: When Venus is in its full phase it is not possible to observe it from the Earth because always in this phase, Venus, the Sun and the Earth are in conjunction (or aligned). This means <u>the Sun is between Venus and Earth</u>, in the orbit that both planets describe around this star.

Therefore, from the Earth, the Sun covers Venus.

This fact along with other discoveries were presented by Galileo to the Catholic Church (which supported the geocentric theory at that time) as a proof that completely refuted Ptolemy's geocentric system and affirmed Copernicus' heliocentric theory.

7 0

3 years ago

Come all ruj-jxgn-qua

Shalnov [3]

Answer:

this app is for solving doubts not sending links ok

5 0

3 years ago