A standing wave is established in a 120 cm long string fixed at both ends. The string vibrates in four segment (n=4) when drive at 120 Hz. (a) Determine the wavelength l

(b) what is the fundamental frequency of the string..

Which subatomic particle has a negative charge

The amount of potential energy possessed by an elevated object is equal to what?

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.