All categories

3 years ago

Which type of modulation is used in these technologies?

2 answers:

6 0

The process of converting data into radio waves by adding information to an electronic or optical carrier signal is known as modulation.

Explanation:

AM programs:

In AM programs the amplitude of the carrier wave is varied in proportion to the message signal being transmitted. The amplitude or overall strength of the signal is varied to integrate the sound information.

Cell phones:

In cell phones Gaussian filtered MSK modulation is used which allows a data rate of 270 kbits/s in a 200-kHZ channel.

FM programs:

In FM programs the frequency of the radio signal is slightly varied by the audio signal. It has better sound quality because of their higher bandwidth.

Television:

To transmit the video signal on the television screen the amplitude modulation is used and to deliver the audio signal on the television screen the frequency modulation is used.

Julli [10]3 years ago

6 0

Answer:

AM programs: amplitude modulation

Cell phones: frequency modulation

FM programs: frequency modulation

Television: both amplitude and frequency

correct on edge

Explanation:

You might be interested in

A lacrosse ball leaves the sick horizontally at 12.0m/s. the catcher is 14.0 away. How much does the ball fall vertically travel

boyakko [2]

Answer:

1.65 m

Explanation:

The motion of the ball is a projectile motion, so it is a parabolic motion with two independent motions:

- on the x-axis, a uniform motion with constant speed $v_x=12.0 m/s$

- on the y-axis, a uniformly accelerated motion with constant acceleration $a=9.8 m/s^2$ downward.

First of all, we need to find the time t at which the ball has travelled halfway to the chatcher, i.e. at a distance of $x=14.0/2=7.0 m$ . This can be found by using the relationship between distance, time and velocity along the horizontal direction:

$t=\frac{x}{v_x}=\frac{7.0 m}{12.0 m/s}=0.58 s$

So now we can move to the vertical motion, and we can calculate the distance covered vertically by the ball while falling for t=0.58 s, by using:

$S=\frac{1}{2}at^2=\frac{1}{2}(9.8 m/s^2)(0.58 s)^2=1.65 m$

7 0

3 years ago

Whats a good air time and maximum height

serg [7]

Answer: Time to reach max. height is the time taken by it to reach the topmost position whereas time of flight is the overall time taken by it, i.e. till it reach down back to the thrower or launcher. And also time of flight is double the time to reach maximum height.

Explanation:

5 0

3 years ago

The acceleration due to gravity is

Gnesinka [82]

Answer:

9.8 m/s^2

Explanation:

This is a constant that you should memorize

6 0

3 years ago

You are a pirate working for dread pirate roberts. you are in charge of a cannon that exerts a force 20000 n on a cannon ball wh

Crazy boy [7]

Refer to the diagram shown below.

F = 2000 N, the force exerted on the cannonball
L = 2.41 m, the length of the barrel
V₀ = 83 m/s, the launch velocity
θ = 35°, the launch angle

Let m = the mass of the cannonball.
Let a = the acceleration of the ball when fired.

The net force acting on the ball is
F - mg sinθ = 2000 - 9.8*m*sin(35°) = 2000 - 5.621*m N

Then, from Newton's Law of motion,
F = ma
2000 - 5.621*m = m*a (1)

The launch velocity is V₀ = 8.3 m/s, therefore
V₀² = 2*a*L
(83 m/s)² = 2*(a m/s²)*(2.41 m)
6889 = 4.82*a
a = 6889/4.82 = 1429.25 m/s² (2)

Insert (2) into (1)
2000 - 5.621*m = 1429.25*m
2000 = 1434.871*m
m = 1.394 kg

Answer: 1.394 kg

4 0

4 years ago

Describe energy transformation and how it relates to the law of conversion of energy????

WINSTONCH [101]

The law of conservation of energy states that the total energy of an isolated system remains constant. Energy can neither be created nor destroyed; rather, it transforms from one form to another. For instance, chemical energy can be converted to kinetic energy in the explosion of a stick of dynamite.

7 0

3 years ago