Suppose that a steel bridge, 1000 m long, was built without any expansion joints and that only one end of the bridge was held fixed
What would the difference in the length of the bridge be between winter and summer, taking a typical winter temperature as 0.00°C, and a typical summer temperature as 40°C? The coefficient of thermal expansion of steel is 10.5 × 10-6 K-1.
A) 0.42 m
B) 0.11 mm
C) 0.11 m
D) 0.42 mm
E) 0.37 cm
Answer: A
You might also like to view...
An observer on Earth's equator would find _______
a. the celestial equator passing at 45 degrees above the northern horizon. b. the celestial equator passing at 45 degrees above the southern horizon. c. that the celestial equator coincides with the horizon. d. the celestial equator passing directly overhead. e. None of the other choices are true.
Bats can detect small objects such as insects that are of a size on the order of a wavelength. If bats emit a chirp at a frequency of 60 kHz and the speed of soundwaves in air is 330 m/s, what is the smallest size insect they can detect?
A. 1.5 mm B. 3.5 mm C. 5.5 mm D. 7.5 mm E. 9.8 mm
In the two-slit experiment, for the condition of bright fringes, the value of m = +4 corresponds to a path difference of
A) 4? B) 3? C) 2? D) ? E) (1/2)?
Distant snow-covered hills appear yellowish due to the color of the
A) atmosphere between the observer and the hills. B) selectively reflected light that reaches a distant observer. C) reflected light that survives scattering. D) sky that is reflected off the hills.