2. A concrete highway is built of slabs 17.0 m long (at 18 °C). How wide should the expansion cracks be (at 18 °C) between the slabs to prevent bucklingif the annual extreme temperatures are -37 °C and 54 °C?(the coefficient of linear expansion of concrete is 1.20 x10-5 °C-l)| 0.01856| meters

Using the equation for linear expansion,

Answered: 2. A concrete highway is built of slabs…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter5: Temperature And Heat

Section: Chapter Questions

Problem 8P: em>. The volume of an ideal gas enclosed in a thin, elastic membrane in a room at sea level where...

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One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a house. Suppose the house already had 15 cm of fiberglass insulation in the attic and in all the exterior surfaces. If you added an extra 8.0 cm of fiberglass to the attic, then by what percentage would the heating cost of the house drop? Take the single story house to be of dimensions 10 m by 15 m by 3.0 m. Ignore air infiltration and heat loss through windows and doors.
A Styrofoam box has a surface area of 0.80 m and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0C, and the outside temperature is 25C. If it takes 8.0 h for 5.0 kg of ice to melt in the container, determine the thermal conductivity of the Styrofoam.
A wooden wall 4.00 cm thick made of pine with thermal conductivity 0.12 W/m K) has an area of 48.0 m2. If the temperature inside is 25C and the temperature out-side is 14C, at what rate is thermal energy transferred through the wall by conduction? (See Section 11.5.)
Calculate the rate of heat conduction out of the human body, assuming that the core internal temperature is 37.0 , the skin temperature is 34.0 , the thickness of the fatty tissues between the core and the skin averages 1.00 cm, and the surface area is 1.40 m2.
On a nice winter day at the South Pole, the temperature rises to 60°F. What is the approximate temperature in degrees Celsius?
The average coefficient of volume expansion for carbon tetrachloride is 5.81 104 (C)1. If a 50.0-gal steel container is filled completely with carbon tetrachloride when the temperature is 10.0C, how much will spill over when the temperature rises to 30.0C?
In winters, if is often warmer in San Francisco than in nearby Sacramento, 150 km inland. In summers, it is nearly always hotter in Sacramento. Explain how the bodies of water surrounding San Francisco moderate its extreme temperatures.
A cylinder of volume 50.0 cm3 made of Pyrex glass is full to the brim with acetone. If the cylinder and acetone are warmed by 30.0C, (a) what is the change in volume of the glass? (b) Of the acetone? (c) Will any acetone spill out of the cylinder? (See Section 10.3.)
For the human body, what is the rate of heat transfer by conduction through the body’s tissue with the following conditions: the tissue thickness is 3.00 cm, the change in temperature is 2.00C, and the skin area is 1.50m2. How does this compare with the average heat transfer rate to the body resulting from an energy intake of about 2400 kcal per day? (No exercise is included.)
em>. The volume of an ideal gas enclosed in a thin, elastic membrane in a room at sea level where the air temperature is 18°C is 8 10-3 m3 .If the temperature of the room is increased by 10°C, what is the new volume of the gas?
When a driver brakes an automobile, the friction between the brake drams and the brake shoes converts the cars kinetic energy to thermal energy. If a 1 500-kg automobile traveling at 30 m/s comes to a halt, how much does the temperature rise in each of the four 8.0-kg iron brake drums? (The specific heat of iron is 448J/kg C.)
The dwarf planet Pluto has an average surface temperature of 44 K and an escape speed (divided by six) of 0.2 km/s. Based on Figure 5.5, which gases, if any, would this body be likely to have retained as an atmospheric constituent over the past 3 billion years?

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