A person hums into the top of a well (tube open at only one end) and finds that standing waves are established at frequencies of 41.2, 68.7, and 96.2 Hz. The frequency of 41.2 Hz is not necessarily the fundamental frequency. The speed of sound is 343 m/s. How deep is the well?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f. s. = 2 against bucklin

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.