MYTUTOR SUBJECT ANSWERS

4642 views

A note was played on a a keyboard. The frequency of the note was 440 Hz. (a) What does a frequency of 440 Hz mean? (b) The sound waves produced by the keyboard travel at a speed of 340 m/s. Calculate the wavelength of the note.

(a) A frequency of 440 Hz means that a single trough and peak of the sound wave oscillates 440 times per second or equally that 440 sound waves are produced by the keyboard per second (This is because the SI unit of a Hz is inverse seconds s^-1)

(b) We first need the equation that relates the two given quantities we have (wave velocity and frequency) to the third unknown, desired quantity (wavelength). This is equation is a simple one, v = f lambda. We want the quantity lambda, so we have to divide both sides of the equation by f to get v / f = lambda. We then plug in the numbers to find lambda, the wavelength, which is lambda = 340 m /s / 440 /s = 340/440 m (as the /s units cancel out leaving just length which is the correct unit for a wavelength!)

Ifan W. GCSE Maths tutor, A Level Maths tutor, A Level Further Mathem...

2 years ago

Answered by Ifan, a GCSE Physics tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

143 SUBJECT SPECIALISTS

£20 /hr

Haider M.

Degree: Medicine (Bachelors) - Exeter University

Subjects offered:Physics, Maths+ 7 more

Physics
Maths
Extended Project Qualification
Chemistry
Biology
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Medical School Preparation-

“A bit about me I am currently in my 2nd year of medical school at the University of Exeter. I really enjoy learning about science, especially the science of health disease, and would love nothing more than to pass down this knowledge ...”

£20 /hr

Josh M.

Degree: Biological Natural Sciences (Bachelors) - Cambridge University

Subjects offered:Physics, Maths+ 3 more

Physics
Maths
Chemistry
Biology
-Oxbridge Preparation-

“Who am I? I'm currently studying Natural Sciences in my third year at Cambridge University, with a focus on Neuroscience. Science is my passion, I've loved it at every level I've studied it, and a desire to pass on my passion is part ...”

£18 /hr

Jason P.

Degree: MPhys Theoretical Physics (Masters) - Edinburgh University

Subjects offered:Physics, Science+ 1 more

Physics
Science
Maths

“Mathematics/martial arts competitions, Model United Nations, Master's of Theoretical Physics degree,confident, thorough, knowledgeable tutor.”

About the author

Ifan W. GCSE Maths tutor, A Level Maths tutor, A Level Further Mathem...

Ifan W.

Currently unavailable:

Degree: Physics with Theoretical Physics (Masters) - Imperial College London University

Subjects offered:Physics, Maths+ 1 more

Physics
Maths
Further Mathematics

“An Imperial College MSci Physics with Theoretical Physics graduate, 1st class honours. Experienced in tutoring A-Level & GCSE level maths/physics.”

MyTutor guarantee

You may also like...

Posts by Ifan

A note was played on a a keyboard. The frequency of the note was 440 Hz. (a) What does a frequency of 440 Hz mean? (b) The sound waves produced by the keyboard travel at a speed of 340 m/s. Calculate the wavelength of the note.

Find the complex number z such that 5iz+3z* +16 = 8i. Give your answer in the form a + bi, where a and b are real numbers.

How do I differentiate y = ln(sin(3x))?

Other GCSE Physics questions

How does conduction work in metals?

What can the nucleus emit during radioactive decay?

A kettle is found to output 65J when its input energy is 100J. What is the efficiency of the kettle, and what happens to the rest of the energy?

A sequence is defined by the recurrence relation u(n+1) = 1/3 u(n) + 10 with u(3) = 6 . Find the value of u(4) and the limit of the sequence.

View GCSE Physics tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok