An object that has zero resistance is a
a. semiconductor.
b. superconductor.
c. diode.
d. transistor.
e. positive ion.
b
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The greatest inaccuracy in Copernicus' model of the solar system was that the planets
a. travel in circular orbits with uniform motion. b. traveled on epicycles whose centers followed orbits around the Sun. c. traveled in elliptical orbits. d. were allowed to travel backwards in their orbits. e. the planets orbited the Sun.
Stratocumulus clouds belong to the ______________ cloud family
Fill in the blank(s) with correct word
Resistance and Resistivity: A 1.0-m length of nichrome wire has a radius of 0.50 mm and a resistivity of 1.0 × 10-6 ? ? m. When this wire carries a current of 0.50 A, what is the voltage across its ends?
A. 0.0030 V B. 0.32 V C. 0.64 V D. 1.6 V
Venus' rotation period is longer than its period of revolution around the Sun
Indicate whether the statement is true or false