Assume a gram of a substance marketed as "Pure Energy" is annihilated by a gram of a second substance "Anti-Pure Energy." How long would the energy released power a city which uses 109 watts of power?
A. 40 hrs
B. 25 hrs
C. 50 hrs
D. 65 hrs
E. 50000 hrs
Answer: C
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Is the Milky Way Galaxy currently participating in Galactic cannibalism, and if so whatis it devouring?
a) The Milky Way is not participating in Galactic cannibalism at this time, but did billionsof years ago. b) It is currently pulling apart and "eating" the Sagittarius Dwarf Galaxy. c) The Milky Way has never participated in Galactic cannibalism at any time. d) It is presently in the final stages of merger with the Andromeda Galaxy. e) It is eating the globular star clusters that are in a spherical distribution in itshalo.
Isobaric work is
A) V ?p. B) p ?T. C) p ?V. D) Q - W. E) Q + W.
At what angle must a fish underwater look in order to see a fisherman at the shore? (Note: n for water is 1.33.)
A) 41.2° B) 48.8° C) 60.0° D) 36.9° E) 90.0°
A parallel-plate capacitor consists of two parallel, square plates that have dimensions 1.0 cm by 1.0 cm. If the plates are separated by 1.0 mm,
and the space between them is filled with teflon, what is the capacitance of this capacitor? (The dielectric constant for teflon is 2.1, and ?0 = 8.85 × 10-12 C2/N • m2.) A) 1.9 pF B) 0.44 pF C) 2.1 pF D) 0.89 pF