The frequency of the middle f note on a piano is 349.23 hz. what is the wavelength of this note in centimeters? the speed of sound in air is 343.06 m/s.

Astring that is fixed at both ends has a length of 1.05 m. when the string vibrates at a frequency of 91.0 hz, a standing wave with five loops is formed. (a) what is the wavelength of the waves that travel on the string? (b) what is the speed of the waves? (c) what is the fundamental frequency of the string?

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?