The SI unit of heat is the ______________
Fill in the blank(s) with correct word
joule (J)
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Very large capacitors have been considered as a means for storing electrical energy. If we constructed a very large parallel-plate capacitor of plate area 10 m2 using paper (k = 3.7) of thickness 1.0 mm as a dielectric, how much electrical energy would it store at a plate voltage of 5000 V? (e0 = 8.85 × 10^-12 C2/N×m2)
a. 4.1 J c. 0.41 J b. 8200 J d. 82,000 J
The quark structure of the proton is __________
Fill in the blank(s) with correct word
The motion of a Foucault pendulum proves that Earth is
a. rotating. b. revolving. c. precessing. d. an oblate spheroid.
According to the theory of seafloor spreading, molten rock is rising up along
A) the mid-ocean ridges. B) trenches that border continental margins. C) islands surrounding the Pacific volcanic rim. D) areas of sinking seafloor.