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daser333 [38]
3 years ago
12

How radiowave work ​

Physics
2 answers:
DiKsa [7]3 years ago
8 0

Answer:

antenna

Explanation:

Anika [276]3 years ago
8 0

Answer: How Do Radio Waves Work?  

Blackbody Radiation. A blackbody is an object that absorbs, then re-emits, radiation.

Free-Emission Radiation. When electrons in gas atoms become dislodged or stripped, they are ionized.

Spectral Line Emission. The third type of thermal emission is spectral line emission.

Synchrotron Emission. This is a non-thermal form...

Explanation:Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz). At 300 GHz, the corresponding wavelength is 1 mm, and at 30 Hz is 10,000 km. Like all other electromagnetic waves, radio waves travel at the speed of light in vacuum. They are generated by electric charges undergoing acceleration, such as time varying electric currents. Naturally occurring radio waves are emitted by lightning and astronomical objects.

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3. A model rocket is launched straight upward at 58.8 m/s.
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Let us assume that rocket only runs in initial energy and not using its own to flying.

Also , let upward direction is +ve and downward direction is -ve .

Initial velocity , u = 58.8 m/s .

Acceleration due to gravity , g=-9.8\ m/s^2 .

Final velocity , v - = 0 m/s .

We know , by equation of motion .

v^2-u^2=2gh\\\\2gh_{max}=0^2-58.8^2\\\\h_{max}=\dfrac{0^2-58.8^2}{-2\times 9.8}\\\\h_{max}= 176.4\ m

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3 years ago
The passengers are facing forward in the direction that the train is moving. What will happen to the passengers sitting on a tra
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Passengers which are facing forward in the direction that train is moving, their bodies will move forward in application of sudden stop of train.

<h3>What is force of inertia?</h3>

Force of inertia is the force which acts in the opposite direction of the force of acceleration acting on the body.

Given infroamtion-

The passengers are facing forward in the direction that the train is moving.

The train comes to a sudden stop.

Lets see what happens step wise-

  • Here, the train in moving in the forward direction and the passengers are also facing forward in the direction that the train is moving.

  • Now the train comes to a sudden stop. By this sudden stop the train stops suddenly but all the object including the passengers is still travelling forward due to the inertia force.

  • Thus all the passenger will tend to move in the direction as they are still travelling.

Hence, passengers which are facing forward in the direction that train is moving, their bodies will move forward in application of sudden stop of train.

Learn more about the force of inertia here;

brainly.com/question/10454047

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What is endurance? a). the ability to run faster b). a combination of balance and coordination c). how much you can stretch d).
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Answer:

D. the ability to exercise for longer periods of time

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For example, when someone does endurance training, they are stretching their body's ability to do a certain exercise for longer times as opposed to increasing strength.

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The force against a solid object moving through a gas or a liquid
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This drag force is always opposite to the object's motion, and unlike friction between solid surfaces, the drag force increases as the object moves faster.
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