1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Yakvenalex [24]
2 years ago
12

Pls help asap. easy science question.

Physics
2 answers:
Solnce55 [7]2 years ago
6 0

This is not a very good set of choices.\

ANY type of electromagnetic wave can be used to send information from place to place, IF we can set up the following conditions:

-- We can only use the electromagnetic waves that are not dangerous to be around.

-- We also can't use the ones that can be blocked or degraded by natural things, like rain, fog, or smoke.  

-- We need an easy way to generate them whenever we want them.

-- We need an easy way to change something about them in a pattern that carries the information.

-- We need an easy way to detect them.

-- We need an easy way to accurately detect the changes, so that we can pull the information off of them.

The electromagnetic waves that DO meet all of those requirements, and we DO use to communicate information are:

-- Radio

-- Microwave

-- Infra-red

-- Visible light

(We use visible light to transmit information when we send it through an optical fiber, and also when we wave at our friend across the street !)

Zanzabum2 years ago
3 0

microwaves and radio waves can transmit info. Radio waves can be used for radio. Microwaves are used in tv remotes and etc.

You might be interested in
A police car is stopped at a red light facing west. When the light turned green, a sports car speeds past it heading west at wit
frutty [35]

Answer:

14 seconds

Explanation:

Distance covered by sports car is measured with 21*t where t is time.

Distance covered by police is measured with at^2/2(t-time, a-acceleration) as it doesnt have starting velocity. If the distances are equal(police catches sport car)

then we have 21t=3/2*t^2 Solving this equation we get t=14 & t=0;

excluding the starting point we have 14 seconds

3 0
3 years ago
Read 2 more answers
You place a book on top of a spring and push down, compressing the spring by 10 cm. When you let go of the book, it is pushed up
enot [183]
At First, there is chemical Energy( in your muscels) which is Used to Push down the spring. This Energy becomes the Energy of the spring, which increases until you stop pushing. If you Put your hand away, the Energy of the spring will become kinetic energ. This Energy is at the highest Level the Moment the book ist Leaving the spring. Afterwards, the kinetic Energy decreases while the Gravitational Potential Energy increases.
4 0
3 years ago
Read 2 more answers
Find the magnitude of the impulse delivered to a soccer ball when a player kicks it with a force of 1360 N. Assume that the play
Alona [7]

Answer:

7.59Ns

Explanation:

Given parameters:

Force  = 1360N

Time of contact  = 5.85 x 10⁻³s

Unknown:

Impulse  = ?

Solution:

The impulse of the ball is given as:

        Impulse  = Force x time

       Impulse  = 1360 x 5.85 x 10⁻³ = 7.59Ns

4 0
2 years ago
You drive in a straight line at 20.0 m/s for 12.0 miles, then at 30.0 m/s for another 12.0 miles. (a) Is the car's average speed
makvit [3.9K]
The average speed is equal to 25.0 mphs

7 0
3 years ago
A government agency would likely spend most of its budget on which of the following?
tekilochka [14]

Answer:

(B) salaries

Explanation:

correct on edg2020

8 0
3 years ago
Other questions:
  • Based on ohms law, the unit of volts is equivalent to
    14·1 answer
  • we measure a voltage difference of 5.0 V between two points on the conducting paper between two parallel conducting electrodes.
    6·1 answer
  • A missile is moving 1350 m/s at a 25° angle it needs to hit a target 23,500 m away in a 55° direction in 10.2 seconds what is th
    14·1 answer
  • Human activities that impact the water cycle
    6·1 answer
  • In an electron dot diagram, each dot represents a(an ____________________.
    6·1 answer
  • An "emergency blow" is a procedure used by military submarines to quickly rise to the surface in case of trouble. It involves us
    7·1 answer
  • Toon Train is traveling at the speed of 10 m/s at the top of a hill. Five seconds later it reaches the bottom of the hill and is
    13·1 answer
  • TRUE of FALSE: The human body responds to stressors by activating the nervous
    5·1 answer
  • How long does it take for the Earth to make a complete revolution around the sun?
    14·2 answers
  • What is fundamental movement?​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!