You find yourself in a place that looks (except for your own presence) perfectly symmetrical. There is no way to distinguish one place from another, and all forces are one
With this perfect symmetry, there is no obvious way to define the flow of time. Where are you? A) You are in the center of a young star.
B) You are in the early universe before the Planck time.
C) You are floating somewhere in the universe near its end, 10100 years from now.
D) You are inside the nucleus of an atom.
E) You are in the universe shortly after inflation.
B
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Magnetic field strength inside a current-carrying coil will be greater if the coil encloses a
A) vacuum. B) wooden rod. C) glass rod. D) rod of iron. E) none of the above
A steel lift column in a service station is a solid cylinder 4.0 m long and 0.20 m in diameter. Young's modulus for this steel is 20 × 1010 N/m2. By what distance does the column compress when a 5000-kg truck is on it?
A) 4.7 × 10-7 m B) 8.0 × 10-7 m C) 3.2 × 10-6 m D) 7.8 × 10-6 m E) 3.1 × 10-5 m
As energy is transferred among organisms, some escapes from the environment as ____ energy
a. electrical b. heat c. light d. mechanical e. nuclear
According to Kirchhoff's first law why do dense, hot bodies create the type of spectrum they do?
What will be an ideal response?