1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pogonyaev
3 years ago
15

Which device or set of devices is contained in a mobile telephone?

Physics
1 answer:
Masja [62]3 years ago
6 0

 

Un teléfono móvil o teléfono celular es un dispositivo portátil que puede hacer o recibir llamadas a través de una portadora de radiofrecuencia, mientras el usuario se está moviendo dentro de un área de servicio telefónco.​ El enlace de radiofrecuencia establece una conexión con los sistemas de conmutación de un operador de telefonía móvil, que proporciona acceso a la red telefónica pública conmutada (PSTN). La mayoría de los servicios de telefonía móvil modernos utilizan una arquitectura de red celular, y por lo tanto los teléfonos móviles son, con frecuencia, llamados celulares, especialmente en Hispanoamérica. En España, se utiliza más el término móvil.

You might be interested in
For a point charge, how does the potential vary with distance from the point charge, r?
mr_godi [17]

For a point charge, how does the potential vary with distance from the point charge, r?

a constant

b. r.

c. 1/r.

d. 1/r^2.

e. r^2.

Answer:

The  correct option is  C

Explanation:

Generally for a point charge the electric potential is mathematically represented as

    V  =  \frac{k  Q  }{r }

Here we can deduce that the electric potential varies inversely with the distance i.e

      V  \  \alpha \  \frac{1}{r}

So

   

3 0
3 years ago
Which term defines the amount of mechanical work an engine can do per unit of heat energy it uses? A. specific heat B. conductiv
KengaRu [80]

Answer:

Efficiency

Explanation:

  • The amount of mechanical work an engine can do per unit of heat energy it uses is called its efficiency.
  • It is also defined as the output divided by the total electrical power consumed.
  • In terms of heat, efficiency of engine is given by :

\eta=1-\dfrac{Q_o}{Q_i}

Q_o\ and\ Q_i are output heat and input heat respectively.

Hence, the correct option is (d) "efficiency"

4 0
3 years ago
In a car how does an air bag minimize the force acting on a person during a collision
Klio2033 [76]
It decreases the momentum in the car.
4 0
3 years ago
Read 2 more answers
1. Two blocks travel along a level frictionless surface. Block A is initially moving to the right at 5.0 m/s, while block B is i
ad-work [718]

Answer: 2.67 m/s

Explanation:

Given

Mass of block A  is m_a=2\ kg

mass of block B is m_b=3\ kg

The initial velocity of block A u_a=5\ m/s

the initial velocity of block B is u_b=0

After collision velocity of block A is v_a=1\ m/s

Conserving momentum

m_au_a+m_bu_b=m_av_a+m_bv_b\\\\2\times 5+3\times0=2\times 1+3\times v_b\\\\v_b=\dfrac{8}{3}=2.67\ m/s

The momentum of block A after the collision is P_a=2\times 1=2\ kg.m/s

Therefore, there is no change in sign.

6 0
3 years ago
The image shows a roller coaster.
mariarad [96]
I believe the answer is c but I’m not 100% sure
8 0
3 years ago
Other questions:
  • One of the main arguments that animal rights advocates present is that animals have rights because they __________.
    9·2 answers
  • A roller coaster car starts at a height of 90 M at Point a and is moving at a speed of 20 m per second on a later Hill at Point
    12·2 answers
  • Examine the scenario.
    14·2 answers
  • If I start driving 80 miles per hour down the interstate how far will I go if I Drive for 4.5 hours
    5·1 answer
  • A photon of wavelength 15 x 10^-12 m hits an electron at rest, causing the electron to move. The photon bounces off the electron
    9·1 answer
  • Which forces are capable of affecting particles or objects from large distance
    15·1 answer
  • A boy travels 12km east wards to a point B and then 5km southwards to another point C. Calculate the difference between the magn
    8·1 answer
  • When the net force on an object is zero, what do we know about the motion of that object
    9·1 answer
  • Chimneys don't get smoke in the house because of...?
    11·2 answers
  • Two cylinders contain the same ideal gas and have the same volume. If the gas molecules in cylinder B have twice the average kin
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!