A standing wave is observed to have the following characteristics: 3rd harmonic, f=42Hz, wavelength=1.33m. Calculate the following: frequency of the 9th harmonic, wavelength of the 7th harmonic, harmonic # if f=210Hz, and speed of wave

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

What are similarities and differences between refraction, reflection, diffraction and absorption?