In what way is Venus most similar to Earth?
A) Both planets are nearly the same size.
B) Both planets have very similar atmospheres.
C) Both planets have similar surface geology.
D) Both planets have warm days and cool nights.
A
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Answer the following statement(s) true (T) or false (F)
1. The earth’s equilibrium temperature depends on its radius
Other astronomers were skeptical about Percival Lowell's claims of Martian canals because
A) it did not seem possible for his telescope to see the surface through its thick atmosphere B) they discovered that Lowell suffered from poor vision C) they were able to prove that Lowell's telescope was faulty D) when they pointed their own telescopes toward Mars they couldn't see them
For the multiplication of 4.769 m times 7.20 m, the result should be reported with how many significant figures?
a. Two b. One c. Three d. Four e. Seven
Two spheres, one with the center core up to r = R/2 hollow and the other solid, have the same mass M and same outer radius R. If they are both rolling at the same linear speed, which one has the greater kinetic energy?
a. The both have the same kinetic energy. b. The hollow one has the greater kinetic energy. c. The solid one has the greater kinetic energy. d. More information is needed to choose an answer.