7) Consider a 2.500 m-long tube that is open on one end in a laboratory on a day when the speed
of sound is 345m/s

a) Sketch the fundamental, or first harmonic, for this tube.

b) How many wavelengths constitute the fundamental?

c) Calculate the frequency of the fundamental.

d) Calculate the frequency of the third harmonic.

1-10. need . physics. circular motion. 35 points

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.