Physics, 18.02.2020 02:05 spellsaltoniza
The Golden Gate Bridge in San Francisco has a main span of length 1.28 km, one of the longest in the world. Imagine that a steel wire with this length and a cross-sectional area of 4.00 3 1026 m2 is laid in a straight line on the bridge deck with its ends attached to the towers of the bridge. On a summer day the temperature of the wire is 35.08C. (a) When winter arrives, the towers stay the same distance apart and the bridge deck keeps the same shape as its expansion joints open. When the temperature drops to -10.00C, what is the tension in the wire? Take Young’s modulus for steel to be 20.0 x 1010 N/m2.
Answers: 2
Physics, 22.06.2019 08:30, kmwise19
If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.
Answers: 1
Physics, 22.06.2019 11:00, ronniethefun
If a simple machine reduces the strength of a force, what must be increased?
Answers: 3
The Golden Gate Bridge in San Francisco has a main span of length 1.28 km, one of the longest in the...
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