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3 years ago

How does an antenna produce radio waves?

Physics

2 answers:

Natali [406]3 years ago

6 0

Answer:

As the electrons (tiny particles inside atoms) in the electric current wiggle back and forth along the antenna, they create invisibleelectromagnetic radiation in the form ofradio waves. ... 1) Electricity flowing into the transmitter antenna makes electrons vibrate up and down it, producing radio waves.

Alla [95]3 years ago

4 0

Answer:

As the electrons (tiny particles inside atoms) in the electric current wiggle back and forth along the antenna, they create invisible electromagnetic radiation in the form of radio waves.

Explanation:

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A tightly closed, well-insulated vacuum flask is an example of which type of<br> system?

nignag [31]

Answer:

Isolated

Explanation:

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4 years ago

Pls help!!<br> 1 example of a conductor and 1 example of a insulator in your EVERYDAY world.

Mkey [24]

Answer:

here

Explanation:

Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air.

Examples of conductors include metals, aqueous solutions of salts

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3 years ago

Read 2 more answers

A mother hawk screeches as she dives at you. You recall from biology that female hawks screech at 785 Hz , but you hear the scre

Ludmilka [50]

Answer:

Speed of the hawk, v = 40.4 m/s

Explanation:

It is given that,

Exact frequency of the female, f = 785 Hz

Observed frequency of female, f' = 890 Hz

Speed of sound, v = 343 m/s

Let v' is the speed of the hawk. It is based on the concept of Doppler's effect. We know that when the object approaches you, its speed is given by :

$f'=f(\dfrac{v}{v-v'})$

$890=785\times (\dfrac{343}{343-v'})$

v' = 40.4 m/s

So, the speed of the hawk is 40.4 m/s. Hence, this is the required solution.

6 0

4 years ago

Make vector A on the simulation have a magnitude of exactly 10 units. What were the starting points and ending points of your ve

Gwar [14]

Answer:

Making a vertical vector, we have a starting point at (-5,2) and an end point at (5,2) that will give us a vector of magnitude of 10 units.

Explanation:

In order to make vectors that have a magnitude of 10 units, the distance between the starting and ending points must be equal to 10.

The easiest way is to set points on either an horizontal or vertical line to make horizontal or vertical vectors.

We can have starting point at (-5,2) and then move up 10 units so we will be at the ending point (5,2), thus the distance between them is 10 units so the vector has a magnitude of 10 units.

We can verify that using the formula for the magnitude which requires first to find the vector.

$\vec v = \text{End point } - \text{Start point}$

So for the points we have

$\vec v = (5,2)-(-5,2)$

We can work with each component, for the x component we have 5-(-5) which give us 10 and for the y component we have 2-2 which give us 0, so the vector is

$\vec v =$