The inner planets are composed of ____

a. rock and ice
b. ice and gas
c. rock and gas
d. metal and ice
e. rock and metal


e

Physics & Space Science

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Uranus and Neptune appear blue or blue-green because

a. their atmospheres absorb blue light very efficiently. b. their solid air-less surfaces are this color c. their surfaces are covered with liquid water with no atmosphere d. traces of methane in their atmospheres absorb red light very efficiently.

Physics & Space Science

What do the size and distribution of small scale temperature variations suggest about the geometry of the Universe?

What will be an ideal response?

Physics & Space Science

A positive ion has

a. More electrons than protons. b. More protons than electrons. c. A +1 charge always. d. One proton.

Physics & Space Science

A stone is thrown with an initial speed of 11.5 m/s at an angle of 50.0 above the horizontal from the top of a 30.0-m-tall building. Assume air resistance is negligible, and g = 9.8 m/s2. What is the magnitude of the vertical-velocity component of the rock as it hits the ground?

a. 7.39 m/s b. bonus question c. What is the magnitude of the horizontal displacement of the rock? d. 26.1 m

Physics & Space Science