2. 3. Steel rails 20 m long are laid on a cold winter day at 14F....
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2. 3. Steel rails 20 m long are laid on a cold winter day at 14F. How much space must be left between the rails to allow for expansion at a summer temperature of 104F? The tires on a race car are filled with air at 10 C, to a gauge pressure of 35 lb/in2 (about 2.4 x 105 Pa). The gauge pressure is the difference between the pressure in the tire and the atmospheric pressure outside the tire. During the race, the tires heat up to 120 C. What will be the gauge reading for the tire pressure at this temperature? 2. 3. Steel rails 20 m long are laid on a cold winter day at 14F. How much space must be left between the rails to allow for expansion at a summer temperature of 104F? The tires on a race car are filled with air at 10 C, to a gauge pressure of 35 lb/in2 (about 2.4 x 105 Pa). The gauge pressure is the difference between the pressure in the tire and the atmospheric pressure outside the tire. During the race, the tires heat up to 120 C. What will be the gauge reading for the tire pressure at this temperature?
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