Which of the following statements best describes the basic structure of an atom?
a. electrons and protons are in motion around a nucleus that contains neutrons.
b. neutrons are in motion around a nucleus that contains protons and electrons.
c. protons are in motion around a nucleus that contains electrons and neutrons.
d. electrons are in motion around a nucleus that contains protons and neutrons.

Which of the following statements is true about women and minorities in early psychology? a. in the early 20th century, numerous graduate schools recruited women and minorities to study psychology. b. opportunities in higher education were limited for women and minorities in the early 20th century due to discrimination. c. despite some obstacles, there were numerous employment opportunities for women and minorities. d. women and minorities were often selected to do academic research in an effort to make the field more diverse.

Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles