If you blow across the open end of a soda bottle and produce a tone of 250Hz, what will be the frequency of the next harmonic heard if you blow much harder?

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

Which are causes of mechanical weathering? (check all that apply) a. acid rain b. plant growth c. animal actions d. carbon dioxide e. pressure release i chose b & e and got the question wrong.

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m