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Ksenya-84 [330]
3 years ago
14

Many household products we consider necessary today such as AM and FM radios, televisions, wireless networks, cordless and cellu

lar telephones, remote-controlled toys, and GPS receivers use ____ to transmit information to humans all over the world.
Physics
2 answers:
satela [25.4K]3 years ago
6 0
They use what is in physics called "Radio waves" ;)
san4es73 [151]3 years ago
4 0
I want to say frequencies would be the answer. I could be wrong though. Hope this may have helped!
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Although he did not present a mechanism, what were the key points of Alfred Wegener’s proposal for the concept of continental dr
valentinak56 [21]

Answer: Alfred Wegener provided some of the important points that supported the theory of continental drift. They are as follows-

  1. The continents were once all attached together, and this can be proved by studying the coastlines of some of the continents that perfectly matches with one another.
  2. The appearance of similar rock types and similar fossils (including both animals and plants) has also contributed much information that continents were once all together.
4 0
3 years ago
Which event in a solar cell uses the photoelectric effect?
musickatia [10]

Answer:

Light shone on metal expulses electrons from its surface. This phenomenon is the photoelectric effect, and the electrons are called photoelectrons. Experiments indicate that by increasing light frequency, the kinetic energy of the photoelectrons increases, and by intensifying the light, the current increases

4 0
2 years ago
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A flow is isentropically expanded to supersonic speeds in a convergent-divergent nozzle. The reservoir and exit pressures are 1.
Kamila [148]

Answer:

Ae/A* = 1.115

Explanation:

Let the reservoir pressure be  p_0

Let the exit  pressure be p_e

Ratio of reservoir pressure and exit pressure

\frac{p_o}{p_e} = \frac{1}{0.3143}

  = 3.182

For the above value of pressure ratio

Obtain the area ratio from the isentropic flow table

Ae/A* = 1.115

The value of pressure ratio is Ae/A* = 1.115

6 0
2 years ago
Somebody please help me my grade depends on it
Darya [45]

Answer:  Hope this helps!

Explanation:

a rock formed from particles that are deposited and lithified are sedimentary.

rocks formed from cooling and hardening magma or lava is igneous.

a rock formed when an already existing rock is subjected to extreme heat and pressure is metamorphic.

8 0
3 years ago
An object spins in a horizontal circle with a radius of 15.0 cm. The rotations are timed and the amount of time it takes for it
bezimeni [28]

Answer:

1.7 m/s

Explanation:

Relevant Data provided as per the question below:-

Radius = 15.0 cm

Time = 0.56 s.

Based on the above information

The computation of the speed of the object is shown below:-

Velocity = \frac{2\times \pi \times Radius}{Time}

Velocity = \frac{2\times \frac{22}{7}  \times 0.15}{0.56}

= \frac{0.942857}{0.56}

= 1.683 m/s

or

= 1.7 m/s

Therefore for computing the speed of the object or velocity we simply applied the above formula by considering the pi and all other given data

6 0
3 years ago
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