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3 years ago

12

Which statement best describes the relationship between researchers testing the abilities of smartphones sensors and protecting

smartphones users privacy

1 answer:

Ahat [919]3 years ago

6 0

See photo attached
Hope this helps ʕ•ᴥ•ʔ

You might be interested in

A solid with one rectangular face and 4 triangular faces is.

Sedaia [141]

That sounds like a rectangular pyramid to me

The net of a rectangular pyramid consists of one rectangle and four triangles. The rectangle is the base of the pyramid, and the triangles are the lateral faces.

4 0

2 years ago

A bat emits a sound at a frequency of 3. 00 × 104 hz as it approaches a wall. The bat detects beats such that the frequency of t

OLga [1]

Taking into account the Doppler efect, the speed of the bat is closest to 5.02 $\frac{m}{s}$ .

The Doppler effect is defined as the apparent frequency change of a wave produced by the relative movement of the source with respect to its observer. In other words, this effect is the change in the perceived frequency of any wave motion when the sender and receiver, or observer, move relative to each other.

The following expression is considered the general case of the Doppler effect:

$f1=f\frac{v+-vR}{v+-vE}$

Where:

f1, f: Frequency perceived by the receiver and frequency emitted by the issuer respectively. Its unit of measurement in the International System (S.I.) is the hertz (Hz), which is the inverse unit of the second (1 Hz = 1 s⁻¹)
v: Velocity of propagation of the wave in the medium. It is constant and depends on the characteristics of the medium. In this case, the speed of sound in air is considered to be 340 m/s
vR, vE: Speed of the receiver and the sender respectively. Its unit of measure in the S.I. is the m/s
±, ∓:

We will use the + sign:

In the numerator if the receiver approaches the sender

In the denominator if the sender moves away from the receiver

We will use the sign -:

In the numerator if the receiver moves away from the emitter

In the denominator if the sender approaches the receiver

In this case, a bat emits a sound at a frequency of 3.00×10⁴ Hz= 30,000 Hz as it approaches a wall.

The bat detects beats such that the frequency of the echo is 900 hz higher than the frequency the bat is emitting.

So, you know:

f1= 30,000 Hz + 900 Hz= 30,900 Hz
f= 30,000 Hz
v= 340 m/s
vE=vR= vbat
Receiver approaches the sender

Replacing in the expression is considered the general case of the Doppler effect:

$30900 Hz=30000 Hz\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}$

Solving:

$\frac{30900 Hz}{30000 Hz} =\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}$

$1.03=\frac{340 \frac{m}{s} +vbat}{340\frac{m}{s} -vbat}$

1.03×( 340 $\frac{m}{s}$ -vbat)= 340 $\frac{m}{s}$ + vbat

1.03×340 $\frac{m}{s}$ - 1.03×vbat= 340 $\frac{m}{s}$ + vbat

350.2 $\frac{m}{s}$ - 1.03×vbat= 340 $\frac{m}{s}$ + vbat

350.2 $\frac{m}{s}$ - 340 $\frac{m}{s}$ = vbat + 1.03×vbat

10.2 $\frac{m}{s}$ = 2.03×vbat

10.2 $\frac{m}{s}$ ÷ 2.03 = vbat

<u><em>5.02 </em></u> $\frac{m}{s}$ <u><em>= vbat</em></u>

In summary, the speed of the bat is closest to 5.02 $\frac{m}{s}$ .

Learn more about the Doppler effect:

6 0

2 years ago

State the differences and similarities of the vine and johnsy

kipiarov [429]

The similarities between vine and Johnsy is that both of them were slowly dying due to the harsh weather conditions.

<h3>The vine and Johnsy.</h3>

In the literary work titled "The Last Leaf" which was a short story witten and originally published by O. Henry on the 15th of October, 1905, vine and Johnsy were the names of the two (2) main characters that experienced a pneumonia epidemic.

The differences between vine and Johnsy include the following:

Vine struggled to survive with the harsh weather conditions while Johnsy struggled to survive with pneumonia.
Vine is incapable of thoughts while Johnsy can process ther thoughts.
Vine wasn't depressed and pessimistic but Johnsy was.

Conversely, the similarities between vine and Johnsy include the following:

Both of them were slowly dying due to the harsh weather conditions.
Their health conditions both deteriorated.

Read more on vine and Johnsy here: brainly.com/question/14304921

5 0

2 years ago

Drag each group of primates to where they are distributed on the map today.

kirill115 [55]

North/South America:

New World monkeys inhabit the New World, which includes North and South America.

Africa and Asia:

Prosimians, the earliest of the primates, inhabit regions of Africa and Asia.

Old World monkeys still live in Africa and Asia. Fossil species also lived in Europe.

Apes are Old World primates. They are found today in Africa and Asia.

<h3>What is the group of Primates?</h3>

The primates are;

- New World monkeys

- Prosimians

- Old World monkeys

- Apes

The groups are;

North/South America

Africa and Asia

New World monkeys inhabit the New World, which includes North and South America.

Prosimians, the earliest of the primates, inhabit regions of Africa and Asia. This also applies to Apes and Old monkeys.

Thus;

North/South America:

New World monkeys inhabit the New World, which includes North and South America.

Africa and Asia:

Prosimians, the earliest of the primates, inhabit regions of Africa and Asia.

Old World monkeys still live in Africa and Asia. Fossil species also lived in Europe.

Apes are Old World primates. They are found today in Africa and Asia.

Read more about Primate Groups at; brainly.com/question/11204777

#SPJ1

4 0

2 years ago

What is the purpose of the database is

TiliK225 [7]

Answer:

The major purpose of a database is to provide the information system (in its broadest sense) that utilizes it with the information the system needs according to its own requirements

If it helps then make me brainlist

3 0

3 years ago