A bat flew from my window to the street, 55 feet away. Then he turned around and came back to my window. What is the distance he travelled? What is his displacement?

Which of the following represents an upside-down image?

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f