The speed of sound in air is approximately 340 m/s. The speed of sound in steel is approximately 5900 m/s. If your friend strikes one end of a steel pipe with a hammer while you listen at the other end, you will hear two distinct sounds: one traveling through the air and the other traveling through the steel pipe. If the pipe is 200 meters long, how much time elapses between the two sounds?
What will be an ideal response?
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Modular bridge-deck panels that have increased ability to resist the corrosive effects of weather and deicing salts are made from _____.
a. fiber-reinforced plastic b. air-entrained concrete c. recycled rubber d. polycarbonate-sheathed steel gratings
? Identify and state the historical significance of Salmon P. Chase.
What will be an ideal response?
It has been estimated that ____ animal species use gopher tortoise burrows
a. Nearly two dozen c. Over 360 b. As many as 170 d. Nearly 600
Fluid level is being checked on an automatic transmission that contains no dipstick. After bringing the transmission to operating temperature and removing the plug no transmission fluid is seen dripping from the outlet. Technician A says this is normal and the fluid level is correct. Technician B says this indicates and overfilled or overheated transmission. Who is correct?
A. Technician A B. Technician B C. Both Technicians A and B D. Neither Technician A or B