In the standing wave experiment. Is the distance between the first and last node
ID: 1568154 • Letter: I
Question
In the standing wave experiment. Is the distance between the first and last nodes, and the wavelength is given by lambda = 21/(n-1) where n is the number of modes. If L =(1.49010.0005) m, then the calcualted value of the wavelength lambda with an error estimate for the second normal mode is: (a) (0.745 plusminus 0.003)m (b) (0.944 plusminus 0.003)m (c) (1.491 plusminus 0.001)m (d) (2.982 plusminus 0.001)m (e) None of the above In the standing wave experiment, which of the following assumptions uses in the derivation of the wave equation provides a practical lower limit on the hanging load mass? (a) Only vertical displacements of the string produce the longitudinal waves. (b) Small angle approximation was used to describe the angle between tension and the horizontal. (c) Tension is assumed large enough to ignore the weight of the string. (d) The point of attachment at fork is a node. (e) None of the above. Which of the following environmental errors can be either systematic or random? (a) Variations in size due to temperature. (b) Material deficits due to wear and erosion (c) Material excesses due to grime and grime (d) Changes in shape due to elastic deformation.s (e) None of the above In the ballistic pendulum experiment, after the collision, what items comprise the closed isolated system in which mechanical energy is conserved? (a) Ball plus pendulum (b) Pendulum plus Earth. (c) Combined ball and pendulum. (d) Earth, ball and pendulum. (e) None of the above.Explanation / Answer
37) After the collision, the mechanical energy of pendulum plus Earth system remains conserved.