A violin has a string length of L = 32 cm. The second string of the violin is tuned to the musical note A4 whose frequency is 440 Hz. a.) What is the wavelength of this string’s first normal mode?
b.) What is the wave speed on this string?
c.) The vibrating string sets the air in vibration.
d.) Given that the speed of sound waves in air is 343 m/s, find the frequency and the wavelength of the sound waves in air. Why are wavelengths different on the string and in the air?

How can one distinguish breccia from conglomerate? a. breccia contains angular clasts and conglomerate contains rounded clasts. b. breccia contains rounded clasts and conglomerate contains angular clasts. c. different minerals cement breccia than cement conglomerate. d. breccia contains sand and conglomerate contains silt.

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

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?