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
sergey [27]
3 years ago
5

A child sits on a dock and notices that 8 wavelengths pass the end of the dock in 4 seconds. What is the

Physics
1 answer:
jeyben [28]3 years ago
6 0
The frequency of the waves are 0,5
This is because the frequency of the wave is calculated by dividing the speed by the wavelength.
You might be interested in
How does work affect energy between objects so it can cause a change in the form of energy?
mihalych1998 [28]

Answer:

Doing work' is a way of transferring energy from one object to another, energy is transferred when a force moves through a distance.

Explanation:  So more energy, more work done bc u transferred more energy to move the object and doing the work. and if you only use a little of energy, the work done also only a little.

5 0
2 years ago
Read 2 more answers
Two identical balls collide one was initially at rest. after the collision one of the balls has a velocity of 3 m/s south. the o
Butoxors [25]
Two identical balls collide<span> head on. The </span>initial velocity<span> of </span>one<span> is 0.75 </span>m/s<span> east, while that of the </span>other one<span> is 0.43 </span>m/s west<span>.</span>
4 0
3 years ago
Which of the following describe advantages of using radio waves over other electromagnetic waves to transmit information to Eart
Whitepunk [10]

The correct options are:

D

"Radio waves have a lower frequency, which makes them safer for humans."

B

"Radio waves take less energy to produce."

<h3>Why do we radio waves over other electromagnetic waves to transmit information to Earth? </h3>

Radio waves are electromagnetic waves with frequencies on the range from 10 KHz to 10 THz.

Now, remember that all electromagnetic waves have the same speed, which is the speed of light, and the energy of a wave is proportional to its frequency.

Particularly, we can see that radio waves have small frequencies (smaller than infrared light) so these waves carry very little energy.

With that in mind, the correct options are.

D

"Radio waves have a lower frequency, which makes them safer for humans."

B

"Radio waves take less energy to produce."

These are the two main reasons of why we use radio waves.

If you want to learn more about electromagnetic waves.

brainly.com/question/14015797

#SPJ1

4 0
2 years ago
How Is radar used to determine the speed of a car
Serga [27]
Radars are frequently used to identify distance and speed, such as how far away an object is or how fast it is moving. <span>The </span>radar<span> device can then use the change in frequency to </span>determine the speed<span> at which the </span>car<span> is moving. In laser-</span>speed<span> guns, waves of light are </span>used<span> in place of radio waves.</span>
4 0
3 years ago
How does lifting electromagnet working​
dmitriy555 [2]

Explanation:

Large electrical shifting magnets have concentrated retaining strength to lift dense, ferric objects and a deep-reaching magnetization. An immensely useful materials management technique is these electromagnetic rises.

3 0
2 years ago
Other questions:
  • Can a black light be used to charge a solar powered product
    14·1 answer
  • How many protons are in the radioactive isotope 40/19K?
    14·1 answer
  • Suppose that we repeat the experiment, except that we place the sodium flame in a strong, localized electric field. The field ch
    9·1 answer
  • Making payments to a victim in order to repay them for losses they incurred during or as a result of the crime is called
    15·1 answer
  • 1. List five exothermic reactions that are going on around you. (10 points)
    12·1 answer
  • If the stopping potential of a metal when illuminated with a radiation of wavelength 480 nm is 1.2 V, find (a) the work function
    7·1 answer
  • While traveling on a dirt road, the bottom of a car hits a sharp rock anda small hole develops at the bottom of its gas tank. If
    11·1 answer
  • The evidence is overwhelming that the Grand Canyon was dug over a span of millions of years by the erosive power of the Colorado
    15·1 answer
  • You want to push a 71-kg box up a 16° ramp. The coefficient of kinetic friction between the ramp and the box is 0.23. With what
    14·1 answer
  • Every winter i fly home to Michigan. it takes 5 hours. what is my average speed?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!