The human ear canal is about 2.7 cm long and
can be regarded as a tube open at one end and
closed at the eardrum.
What is the fundamental frequency around
which we would expect hearing to be most
sensitive? Assume the speed of sound in air
to be 344 m/s.
Answer in units of kHz.

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer