Which arrow represents the centripetal acceleration?

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

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

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe