How Do You Calculate Wavelength and Wave Speed?

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Homework Help Overview

The discussion revolves around calculating the wavelength of a wave given its frequency, specifically focusing on a frequency of 4.0 x 107 Hz. Participants are exploring the relationship between wave speed, frequency, and wavelength, particularly in the context of electromagnetic waves.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • Participants discuss the use of the equation V = wavelength × frequency and express confusion about using scientific notation on calculators. Questions arise regarding the speed of light and its relevance to the problem, as well as the interpretation of large numbers and units in calculations.

Discussion Status

The discussion is active, with participants providing guidance on how to set up calculations and check units. There is a recognition of the need to clarify assumptions about the wave's medium and the implications of using the speed of light in the calculations. Multiple interpretations of the problem are being explored.

Contextual Notes

Some participants note discrepancies in the units and values provided, questioning the relevance of certain numbers in the context of the equations being used. There is also mention of homework constraints regarding the format of answers and the need for clarity in calculations.

  • #31
Meesh said:
Again, your equation is wavelength = speed / frequency. ( if you are unsure do a unit check... Does metres = [m/s]/(1/s) ? Yes. So you should just have 790/31200. Don't forget to look at the units to be sure... Or look at the equation. :)
Okay, so is 2.53 cm an acceptable answer?
 
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  • #32
Uh, I need help this oscillation question?

Water waves in a shallow dish are 6.0 cm long. At one point the water oscillates up and down at a rate of 4.8 oscillations per second.
a. What is the speed of the water waves?
b. What is the period of the water waves?

Oscillations? 6.0 cm is the wavelength probably.
 
  • #33
Sonny18n said:
Uh, I need help this oscillation question?

Water waves in a shallow dish are 6.0 cm long. At one point the water oscillates up and down at a rate of 4.8 oscillations per second.
a. What is the speed of the water waves?
b. What is the period of the water waves?

Oscillations? 6.0 cm is the wavelength probably.

Please start a new thread with this new question. This thread is now locked.
 

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