1. The instrument at the right is 5 meters long and is vibrating as shown It vibrates up and down with 33 complete vibrational cycles in 10 seconds.

a) What type of instrument being used?
b) Which harmonic is shown in the diagram?
c) Determine the frequency, period, wavelength and speed for this
wave.
d) Determine the 3rd harmonic frequency?​

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.