The break-up of Pangaea had worldwide consequences with the exception of
A) the lowering of sea level.
B) a rise in sea level.
C) the divergence and evolution of new species.
D) climate change.
Answer: A
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Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge?
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A child has a temperature of 101°F. If her total cross-sectional area is 2 m2, find the energy lost each second (in W) due to radiation, assuming the emissivity is 1 . (Assume the room temperature is 70°F.)
a. 217 b. 180 c. 90 d. 68 e. 850
An object is placed a distance y0 = ?2f in front of a concave mirror of focal length f that is located at y = 0 . An identical object is placed a distance y'0 = ?2f in front of a convex mirror of focal length ?f that is located at y' = 0 . The difference between the two image positions, yi ? y'i, is a. f /2
b. f. c. 4f /3. d. 2f. e. 8f /3.
Gas in a container increases its pressure from 1 atm to 3 atm while keeping its volume constant. Find the work done (in J) by the gas if the volume is 5 liters
a. 0 b. 3 c. 5 d. 15 e. 15 × 10^2