The thickness of the Galaxy near the Sun is about 1000 light-years
Indicate whether the statement is true or false
TRUE
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Vision Problems: Farsightedness can usually be corrected with
A. converging lenses. B. diverging lenses. C. convex mirrors. D. cylindrical lenses. E. concave mirrors.
No force of gravity acts on an astronaut in an orbiting space station
1.True 2.False
Resistance and Resistivity: How much current will flow through a 40.0-m length of metal wire with a radius of 4.0 mm if it is connected to a power source supplying 16.0 V? The resistivity of the metal is 1.68 × 10-8 ? ? m.
A. 1200 A B. 9.5 × 108 A C. 68 nA D. 710 A
The types of current carried by the headlights of an automobile, and by a plug-in toaster in your kitchen, are
A) both DC. B) both AC. C) AC and DC, respectively. D) DC and AC, respectively. E) None of the above.