Physics, 20.06.2019 18:02, kamya47

1. most waves are caused by vibrations. what motion in a transmitting antenna causes the vibrations that produce radio waves? 2. name two common household appliances that produce electromagnetic waves other than radio waves. what kind of electromagnetic waves do they produce? 3. when you are in a car and it passes through a tunnel, the radio signal is sometimes lost. why do you think this happens?

Answers: 1

Show answers

Answers

answered: scl

1.Oscillatory motion : this is the to and fro movement of wave signals from the antenna

2.a.Microwave Oven- produces microwaves

b.. Light bulb-produces visible light

3.Radio signals does not pass through a solid barrier in the dark. Just like how light can't pass through a rock. The radio signals are restored as the car gets to the entrance of the tunnel

Explanation:

Waves is a disturbance which travels displacement and transfers energy without displacing the medium itself

Most waves are caused by vibrations. What motion in a transmitting antenna causes the vibrations that produce radio waves?

Oscillatory motion : this is the to and fro movement of wave signals from the antenna

2. Name two common household appliances that produce electromagnetic waves other than radio waves. What kind of electromagnetic waves do they produce?

a.Microwave Oven- produces microwaves

b.. Light bulb-produces visible light

3.When you are in a car and it passes through a tunnel, the radio signal is sometimes lost. Why do you think this happens?

Radio signals does not pass through a solid barrier in the dark. Just like how light can't pass through a rock. The radio signals are restored as the car gets to the entrance of the tunnel

answered: Milk18

The answer 1 is
The best-known use of radio waves is for communication; television, cellphones and radios all receive radio waves and convert them to mechanical vibrations in the speaker to create sound waves that can be heard.Electromagnetic radiation is transmitted inwaves or particles at different wavelengths and frequencies.

the answer 2 is

Radio Waves: Instant Communication
Microwaves: Data and Heat

i think the answer number 3 is
It is all about wavelength versus tunnel diameter. The wavelength of GPS is about 20cm it would happily propagate in any normal tunnel if it could get in but the earth and other structures absorb it. AM radio (600kHz - 1500kHz) cannot propagate in any normal tunnel because the wavelength is too long (500m-200m) relative to the diameter, and thus gets reflected at the entrance. FM (100MHz ~ 3m) would propagate and it does for a while but then it suffers reflections

answered: Guest

the answer is b i think

answered: Guest

battery with hi vtge high val resist in series

Other questions on the subject: Physics

Physics, 21.06.2019 23:30, mmaglaya1

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Answers: 1

continue

Physics, 22.06.2019 03:30, 1074885

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Answers: 1

continue

Physics, 22.06.2019 09:00, montgomeryaevans

This is really important 1.which of the following prefixes represents the largest value? (2 points)gigahectorkilomilli2.which of the following types of graphs is best for plotting the mean, median, and mode of data? (2 points)bar graphbox-and-whiskercircle graphstem-and-leaf

Answers: 1

continue

Physics, 22.06.2019 10:20, coollid876

What determines the amount of inertia an object has

Answers: 2

continue

Do you know the correct answer?

1. most waves are caused by vibrations. what motion in a transmitting antenna causes the vibrations...