The average speed of air molecules in your room is on the order of the speed of sound. What is their average velocity?
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- 1. Five bicyclists are riding at speeds 2.6 m/s, 4.7 m/s, 5.4 m/s, 3.5 m/s, and 2.6 m/s. a) What is their average speed? V ave b) What is their rms speed? Vrms m/s m/sThe bulk modulus of water is B = 2.2 x 10⁹ N/m2. What change in pressure AP (in atmospheres) is required to keep water from expanding when it is heated from 18.8 °C to 30.5 °C? Number i eTextbook and Media UnitsCarbon dioxide gas, CO2, travels at about 340 m/s at room temperature. What is the travel rate (velocity) of helium, He, at the same temperature?
- 3 / 6 | 100% + | @ 2. A glass tube is bent into the shape shown, and filled with water. The right end of the tube is open to the air, but the left end of the tube is sealed. What is the pressure P₁ of the gas inside the sealed left end? (Note: the answer is not Patm.) BJ 0.5m 0.4m 0.3m 0.2m 0.1m Om PL ..... S ...The following information about solid materials is taken from the Science Data Book (Tennant, 1971): Material Aluminium Brass Copper Glass Iron Steel Tin Linear expansivity (K-1) 23 x 10-6 18 x 10-6 17 x 10-6 9 x 10-6 11 x 10-6 15 x 10-6 23 x 10-6 a) Write a word equation to explain the meaning of the term 'linear expansivity'. b) A glass fibre used in an optical cable is 50 m long. Calculate the increase in length of the fibre if the temperature rises from 0 °C to 20 °C. you have calculated in (b) would change for a glass fibreIntegrated circuits are manufactured in vacuum chambers in which the air pressure is 1.00x10-10 mm of Hg.
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