How long does it take for a radar signal to reflect off an island 1500m away?

In summary, waves have properties such as amplitude, wavelength, frequency, and speed. Transverse waves have particles that vibrate perpendicular to the direction of propagation, while longitudinal waves have particles that vibrate parallel to the direction. The speed of a wave is affected by the medium it travels through, with denser mediums and higher temperatures leading to faster propagation. Waves can interfere with each other, either adding together or canceling out. Waves transfer energy through the oscillation of particles in a medium, with the amount of energy transferred being proportional to the amplitude of the wave.
  • #1
roxxyroxx
48
0

Homework Statement



the radar on a ship sends out a signal which reflects off a rocky island 1500m ahead of the ship. how much time passes from the time the signal is sent until the reflection is detected?

Homework Equations


?


The Attempt at a Solution


?
 
Physics news on Phys.org
  • #2
2. Homework Equations

t=s/v

3. The Attempt at a Solution

v=c=3.10^8 (m/s)

s=2.1500=3000 (m)

t=3000/3.10^8= 10^-5 (s)
 
  • #3
thanks!
but y did u times by 2?
 
  • #4
Because the signal is reflected, so it must travel 2 times the distant between the island and the ship (sent, reach the island and come back)
 
  • #5
ok great thanks!
 

1. What are the properties of a wave?

Waves have several properties, including amplitude, wavelength, frequency, and speed. Amplitude is the maximum displacement of a wave from its equilibrium position. Wavelength is the distance between two consecutive peaks or troughs of a wave. Frequency is the number of complete oscillations of a wave per second. Speed is the rate at which a wave travels through a medium.

2. What is the difference between a transverse and a longitudinal wave?

A transverse wave is a type of wave where the particles of the medium vibrate perpendicular to the direction of wave propagation. Examples of transverse waves include electromagnetic waves and water waves. On the other hand, a longitudinal wave is a type of wave where the particles of the medium vibrate parallel to the direction of wave propagation. Sound waves are an example of longitudinal waves.

3. How is the speed of a wave affected by the properties of the medium?

The speed of a wave is affected by the properties of the medium in which it travels. In general, waves travel faster in denser mediums. For example, sound waves travel faster in solids than in gases. The temperature of the medium also affects the speed of sound waves, with higher temperatures leading to faster propagation. Additionally, the elastic properties of a medium can also affect the speed of a wave.

4. Can waves interfere with each other?

Yes, waves can interfere with each other. When two waves meet, they can either add together or cancel each other out, depending on their amplitudes and phases. This phenomenon is known as wave interference and can be observed in various situations, such as when two sound waves meet or when two water waves cross paths.

5. How do waves transfer energy?

Waves transfer energy through the oscillation of particles in a medium. As a wave travels through a medium, the particles of the medium vibrate and transfer energy to neighboring particles. This transfer of energy continues as the wave propagates through the medium. The amount of energy transferred by a wave is directly proportional to the amplitude of the wave.

Similar threads

  • Introductory Physics Homework Help
Replies
8
Views
2K
  • Introductory Physics Homework Help
Replies
2
Views
1K
  • Introductory Physics Homework Help
Replies
4
Views
2K
  • Introductory Physics Homework Help
Replies
2
Views
2K
  • Introductory Physics Homework Help
Replies
1
Views
1K
  • Introductory Physics Homework Help
Replies
5
Views
2K
  • Introductory Physics Homework Help
Replies
4
Views
4K
  • Introductory Physics Homework Help
Replies
5
Views
2K
  • Introductory Physics Homework Help
Replies
6
Views
1K
  • Introductory Physics Homework Help
Replies
4
Views
3K
Back
Top