An important similarity that Newton noticed between a falling apple and the moon was that
A) the accelerations of both are toward the center of Earth.
B) the net force on both is toward the center of Earth.
C) Both of the above.
D) the velocity of both is toward the center of Earth.
E) All of the above.
Question 2
A key step in the destruction of ozone by chlorofluorocarbons is
A) the chlorofluorocarbon molecule separates, resulting in free carbon which produces a greenhouse effect.
B) the chlorofluorocarbon molecule directly combines with atmospheric ozone.
C) carbon atoms react with ozone.
D) radiation from the sun separates chlorofluorocarbon, resulting in free chlorine.
E) radiation from the sun breaks down O3 molecules.
Earth and the Moon
The Far Side of the Moon
Moon Golf
Earth-Moon-Sun Positions during the Spring Tide
Similarity of the chemical structure of 5-bromouracil (5-BU) and thymine
My dad is important to me