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
ipn [44]
3 years ago
9

A string tied between two post is oscillating at 3Hz. A student determines the standing waves have a length of 4 meters. What is

the velocity of the wave?
Physics
1 answer:
torisob [31]3 years ago
8 0

Answer:

12 m/s

Explanation:

Standing waves are waves that are formed between two fixed points in space, so they cannot propagate, but they are just oscillations about a fixed points. Examples of standing waves are the waves in a string.

The relationship between wavelength, frequency and speed of a wave is given by the wave equation:

v=f \lambda

where

v is the speed of the wave

f is its frequency

\lambda is its wavelength

For the standing wave in this problem we have:

f = 3 Hz is the frequency of the wave

\lambda=4 m is the wavelength

Solving for v, we find the velocity of the wave:

v=(3)(4)=12 m/s

You might be interested in
Three point charges are fixed in place in a right triangle, as shown in the figure.
8090 [49]
Oh gosh oh I see it in my life face and
4 0
3 years ago
What is table salt (NaCl) formed by?
Rzqust [24]
NaCl is a compound formed by a chemical reaction between Na (Sodium) and Cl (Chlorine). Sodium is an alkai metal in Group One of the Periodic Table, and it is very reactive. All alkai metals react violently with water and they are often found combined in nature because they are that reactive. Chlorine is a halogen in Group 17 of the Periodic Table and they are very reactive. 
6 0
3 years ago
Read 2 more answers
Pushing a door closed is an example of force. true or false​
koban [17]

Answer:

True

Explanation:

I am not 100% on the answer for this question but i hope it was right

3 0
2 years ago
Read 2 more answers
What is the greenhouse effect?
Zanzabum
A on that problem :)[email protected]
6 0
2 years ago
Read 2 more answers
With the same block-spring system from above, imagine doubling the displacement of the block to start the motion. By what factor
Fofino [41]

Answer:

A)     K / K₀ = 4   b)     v / v₀ = 4

Explanation:

A) For this exercise we can use the conservation of mechanical energy

in the problem it indicates that the displacement was doubled (x = 2xo)

starting point. At the position of maximum displacement

      Em₀ = Ke = ½ k (2x₀)²

final point. In the equilibrium position

      Em_{f} = K = ½ m v²

        Em₀ = Em_{f}

        ½ k 4 x₀² = K

        (½ K x₀²) = K₀

         K = 4 K₀

          K / K₀ = 4

B) the speed value

          ½ k 4 x₀² = ½ m v²

          v = 4 (k / m) x₀

if we call

           v₀ = k / m x₀

          v = 4 v₀

         v / v₀ = 4

3 0
2 years ago
Other questions:
  • Landon attends an early childhood program that is located at a community center which also runs an adult care program.
    14·1 answer
  • To calculate the amount of energy transferred by heat to or from an object you must know the mass of the object and what else??
    11·1 answer
  • A 90-kg skydiver jumps from a height of 6000 m above the ground, falling head-first (pike position). The area of the diver is 0.
    9·1 answer
  • A reasonable estimate of the moment of inertia of an ice skater spinning with her arms at her sides can be made by modeling most
    8·1 answer
  • A particle undergoes a constant acceleration of 3.90 m/s2. After a certain amount of time, its velocity is 12.2 m/s. (Where appl
    8·1 answer
  • In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.60 m/s relative to the ground. A teamma
    9·1 answer
  • The message refers to which of the following?
    5·1 answer
  • who plays adopt me on rob.lox!! plz answer people only if you play though tell me your best pet and your user name so we can pla
    6·2 answers
  • An airplane needs to reach a velocity of 199.0 km/h to take off. On a 2000-m runway, what is the minimum acceleration necessary
    5·1 answer
  • Please help me out id really appreciate it
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!