- #1
vinny380
- 29
- 7
Question: When you walk with a cup of coffee (diameter 8cm) at just the right pace of about 1 step per second, the coffee sloshes more and more until eventually it starts to spill over the top. Estimate the speed of the waves of the coffee.
Relevant Formulae:
f= 1/T
v= f * wavelength
Solution:
I am not really sure if I am doing this right... but I said since the cup has a diameter of 8cm, the wavelength of the coffee is also 8cm (not sure it this is true)...
If the above is true, all i would need to do is find the frequency. Though I am kind of confused when it says that I am walking at a pace of 1 step per second. How can a frequency be found from this?
After finding these two quanities, and multiplying, a velocity could be found...
Relevant Formulae:
f= 1/T
v= f * wavelength
Solution:
I am not really sure if I am doing this right... but I said since the cup has a diameter of 8cm, the wavelength of the coffee is also 8cm (not sure it this is true)...
If the above is true, all i would need to do is find the frequency. Though I am kind of confused when it says that I am walking at a pace of 1 step per second. How can a frequency be found from this?
After finding these two quanities, and multiplying, a velocity could be found...