How many cm2 equal a m2?
A) 10-4
B) 10-2
C) 102
D) 104
E) 106
D
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Coulomb's Law: A point charge Q1 = +6.0 nC is at the point (0.30 m, 0.00 m); a charge Q2 = -1.0 nC is at (0.00 m, 0.10 m), and a charge Q3 = +5.0 nC is at (0.00 m, 0.00 m). What are the magnitude and direction of the net force on the +5.0-nC charge due to the other two charges? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
What will be an ideal response?
Chemical disequilibrium inevitably exists near deep-sea volcanic vents, because
A) there are unequal concentrations of minerals and water B) the high-temperature vent water causes water molecules to break down into hydrogen and oxygen C) mixing between the high-temperature vent water and the surrounding low-temperature ocean water creates conditions in which minerals and water will undergo chemical reactions D) the high pressures existing at the ocean floor cause chemical reactions between minerals and water
If the Earth's mass were suddenly made larger but the Moon's mass stayed the same,
a. the Earth would exert a larger force on the Moon. b. the Moon would exert a larger force on the Earth. c. the Earth would exert a larger force on the Moon but the Moon would exert the same force on the Earth as before. d. none of the above
Photosynthesis produces ______________ in the atmosphere
a. carbon dioxide b. oxygen c. argon d. carbon monoxide