Which statement is true of Venus' surface?
A) There are no shield volcanoes.
B) Atmospheric pressure is very low.
C) It has remained unchanged for billions of years.
D) There is an extensive hydrosphere.
E) There are two continent sized uplands.
C
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we imagine the history of the universe compressed into one year, with the present as the stroke of midnight at the very end of that year, dinosaurs became extinct
A) about 6 months ago. B) about 3 weeks ago. C) yesterday morning. D) about an hour ago.
A rigid rod of length l rotates about an axis perpendicular to the rod, with one end of the rod fixed to the axis. Which of the following are equal at all points on the rod? I. the angular position II. the angular velocity III. the angular acceleration IV. the centripetal acceleration V. the tangential acceleration
a. I and II b. I, II, and III c. I, II, III and IV d. I, II, III, IV and V e. I, II and IV.
A horizontal uniform meter stick supported at the 50-cm mark has a mass of 0.50 kg hanging from it at the 20-cm mark and a 0.30 kg mass hanging from it at the 60-cm mark. Determine the position on the meter stick at which one would hang a third mass of 0.60 kg to keep the meter stick balanced
a. 74 cm b. 70 cm c. 65 cm d. 86 cm e. 62 cm
Explain the advantages and disadvantages of "superinsulated" homes
What will be an ideal response?