Consider steel railroad rails, which have a thermal coefficient of linear expansion of 1.20 × 10-5 / °C. How large an expansion gap, in meters, should be left between such rails if they may reach a maximum temperature 36.5 degrees Celsius greater thank when they were laid. Assume their initial length is 10.0 meters.

The height of the Washington Monument is measured to be 170 m on a day when its temperature is 35.0°C. What will the change in its height be on a day when its temperature falls to -4.5°C? Although the monument is made of limestone, take the thermal coefficient of expansion to be the same as for marble, which is 2.50 x 10-6/°C. (Be sure to include the appropriate sign with your answer.). Enter a number. length and temperature are always defined as final value minus the initial value. Therefore be sure to consider the cign quantities om

If a 0.85 km (at 0°C ) section of straight railroad track made of steel is assumed to behaveas a single piece, what is the difference in the length of the track between a cold winter day (-12°C)and a hot summer day (+28°C)? The coefficient of linear expansion (a) of steel is 1.2 x 10-5 °C-1[1 km = 1,000 m]

An aluminum ring has an inner radius of 4.9973 cm at room temperature (20 °C). A copper ball has a radius of 5.0035 cm at the same temperature. To what final temperature (in °C) must you heat the ring for the ball (starting from room temperature) to be able to pass through it? (The linear thermal expansion coefficient for aluminum is 2.34 * 10-5 °C-1 and for copper is 1.76 * 10-5 °C-1.)

A gold wire 2.4 m long has its temperature lowered by 42oC. Assuming the linear coefficient of expansion has a constant value of 13 x 10-6 K-1 over that temperature range, calculate the change in length of the wire. Express your answer in mm.

Concrete sidewalks are always laid in sections, with gaps between each section. For example, the figure shows five identical 5.30-m sections, the outer two of which are against immovable walls. The four identical gaps between the sections are provided so that thermal expansion will not create the thermal stress that could lead to cracks. What is the minimum gap width necessary to account for an increase in temperature of 39 °C?

How large an expansion gap should be left between steel railroad rails if they may reach a maximum temperature of 30.5 deg C greater than when they were laid? Their original length is 6.5 m. Use a=1.2X10^-5  1/°C