Question #09177

2 Answers
May 16, 2017

The speed of the wave is #208(mm)/s#

Explanation:

The wavelength #lamda# is #13mm# and the frequency #f# is #16hz#.

Remember the wavelength is a measure of one cycle of the wave.
Then the #13mm# wavelength can be thought of as #13(mm)/c#

We also know that #16hz# is the name given to #16c/s# or cycles per second.

The formula relating wavelength, frequency and speed is:

#lamda=v/f#

Then: #13mm=v/(16hz)#

From above we can write it: #13(mm)/c=v/(16c/s)#

Then: #v=13(mm)/cancel(c)*16 cancel(c)/s#

v=#208(mm)/s#

May 16, 2017

.

Explanation:

The velocity of a wave equals to its frequency multiplied by its wavelength.
#v=f lambda#

#v= 16# x #13# x#10^-3# (13mm = #13/1000#m)
#v = 0.208ms^-1#