A sound wave traveling through dry air has a frequency of 16hz a wavelength of 22 m and a speed of 350 m/s. when the sound wave passes through a cloud of methane its wavelength changes to 28 m while its frequency remains the same what is its new speed A. 448 m/s
B. 9800 m/s
C. 13 m/s
D. 350 m/s

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

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