If the system of Figure 5.9 is only the orange, is there a net force on the system when the apple pulls?
PHYSICAL GEOGRAPHY Our Place in Space Big Bang Theory: The Universe emerged from a singular, enormously dense mass about 14 billion years ago. Evidence: 1) the most distant star clusters are moving away from us at a greater speed than those that are closer, and 2) amount of cosmic microwave background radiation is uniform throughout the universe – leftover energy from an early period of rapid expansion Galaxy: largest definable unit within the universe (ex. Milky Way is our galaxy) Oblate spheroid: The Earth is not a perfect circle. It bulges at the Equator, and flattened at the poles The bulge is caused by a centrifugal force Sun angle: angle at which the sun’s rays strike Earth’s surface Rela