A long steel I-beam used in bridge construction has a length of 15.0 m. The bear may be exposed to temperatures as low as -16°C in the winter and as high as 31°C in the summer. What is the difference in length of the beam between these two temperature extremes?

A long steel I-beam used in bridge construction has a length of 15.0 m. The bear may be exposed to temperatures as low as -16°C in the winter and as high as 31°C in the summer. What is the difference in length of the beam between these two temperature extremes?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 119AP: For the human body, what is the rate of heat transfer by conduction through the body's tissue with...

See similar textbooks

Similar questions

One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a house. Suppose a single-story cubical 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, by what percentage would the heating cost of the house drop? Take the house to have dimensions 10 m by 15 m by 3.0 m. Ignore air infiltration and heat loss through windows and doors, and assume that the interior is uniformly at one temperature and the exterior is uniformly at another.
A person taking a reading of the temperature in a freezer in Celsius makes two mistakes: first omitting the negative sign and then thinking the temperature is Fahrenheit. That is, the person reads xC as xF . Oddly enough, the result is the correct Fahrenheit temperature. What is the original Celsius reading? Round your answer to three significant figures.
Compare the rate of heat conduction through a 13.0-cm-thick wall that has an area of 10.0 m2 and a thermal conductivity that of glass wool with the rate of heat conduction through a 0.750-cm-thick window that has an area of 2.00 m2, assuming the same temperature difference across each.
An engineer wants to design a structure in which the difference in length between a steel beam and an aluminum beam remains at 0.500 m regardless of temperature, for ordinary temperatures. What must the lengths of the beams be?
The thermal conductivities of human tissues vary greatly. Fat and skin have conductivities of about 0.20 W/m K and 0.020 W/m K, respectively, while other tissues inside the body have conductivities of about 0.50 W/m K. Assume that between the core region of the body and the skin sin face lies a skin layer of 1.0 mm, fat layer of 0.50 cm, and 3.2 cm of other tissues. (a) Find the R-factor for each of these layers, and the equivalent R-factor for all layers taken together, retaining two digits. (b) Find the rate of energy loss when the core temperature is 37C and the exterior temperature is 0C. Assume that both a protective layer of clothing and an insulating layer of unmoving air a absent, and a body area of 2.0 m2.
An astronaut performing an extra-vehicular activity (space walk) shaded from the Sun is wearing a spacesuit that can be approximated as perfectly white ( e=0 ) except for a 5 cm × 8 cm patch in the form of the astronaut's national flag. The patch has emissivity 0.300. The spacesuit under the patch is 0.500 cm thick, with a thermal conductivity k 0.0600 W/m , and its inner surface is at a temperature of 20.0 . What is the temperature of the patch, and what is the rate of heat loss through it? Assume the patch is so thin that its outer surface is at the same temperature as the outer surface of the spacesuit under it. Also assume the temperature of outer space is 0 K. You will get an equation that is very hand to solve in closed form, so can solve it numerically with a graphing calculator, with software, or even by trial and error with a calculator.
Most automobiles have a coolant reservoir to catch radiator fluid than may overflow when 1he engine is hot. A radiator is made of copper and is filled to its 16.0L capacity when at 10.0C. What volume of radiator fluid will overflow when the radiator and fluid reach their 95.0C operating temperature, given that the fluid’s volume coefficient of expansion is =400106/C ? Note that this coefficient is approximate, because most car radiators have operating temperatures of greater than 95.0C.
A construction worker uses a steel tape to measure the length of an aluminum support column. If the measured length is 18.700 m when the temperature is 21.2C, what is the measured length when the temperature rises to 29.4C? Note: Dont neglect the expansion of the tape.
a sphere emissivity = 0.42 of radius 25 cm is at 27 degrees celsius is placed in a room with a temperature of 2 degrees celsius A. what is the rate of heat energy enterinh the sphere B. How long will it take for the spiritual as 1 x 10^6 joules of energy?
Thick fluids such as asphalt and waxes and thepipes in which they flow are often heated in order to reducethe viscosity of the fluids and thus to reduce the pumpingcosts. Consider the flow of such a fluid through a100-m-long pipe of outer diameter 30 cm in calm ambientair at 0°C. The pipe is heated electrically, and a thermostatkeeps the outer surface temperature of the pipe constant at25°C. The emissivity of the outer surface of the pipe is 0.8,and the effective sky temperature is -30°C. Determine thepower rating of the electric resistance heater, in kW, thatneeds to be used. Also, determine the cost of electricityassociated with heating the pipe during a 10-h period underthe above conditions if the price of electricity is $0.09/kWh.
A mercury thermometer still in use for meteorologyhas a bulb with a volume of 0.780 cm3and a tube for the mercury to expand into of inside diameter 0.130 mm. (a)Neglecting the thermal expansion of the glass, what is thespacing between marks 1 °C apart? (b) If the thermometeris made of ordinary glass (not a good idea), what is thespacing?
Compute the ratio of the rate of heat loss through asingle-pane window with area 0.15 m2 to that for a double-pane windowwith the same area. The glass of a single pane is 4.2 mm thick,and the air space between the two panes of the double-pane window is7.0 mm thick. The glass has thermal conductivity 0.80 W /m . K. The airfilms on the room and outdoor surfaces of either window have a combinedthermal resistance of 0.15 m2 . K/W.