You're outside on a cold day (tout = 0 °c)listening to your ipod with an external circular speaker having a diameter 0.0550 m. because of the cold you decide to go inside where the temperature is 27.5 °c. if your favorite song begins with a 8.54-khz tone, find the change in the diffraction angle of this tone assuming the air behaves as an ideal gas.

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather