Question 44
HardOriginal questionA sound wave has a frequency of 500 Hz and a wavelength of 0.68 m. What is its speed?
Show the answer and explanation
CorrectNot quiteAnswer B
Correct answer: B
Explanation
Wave speed = frequency × wavelength.
= 500 × 0.68 = 340 m/s.
Worth noting
735 divides frequency by wavelength. 34 and 3,400 are decimal slips; 340 m/s is also the familiar speed of sound in air.
- Concept
- Wave speed = frequency × wavelength
- Typical timeTypical
- 90 s
- Your timeYours
- —
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