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• which portion of the electrocardiogram represents the wave-like change in charge in the positive direction received by the atria from the sinoatrial (sa) node?
  
• in this lab, you will use a magnet and a simple circuit to examine the concepts of electricity and magnetism. think about how these ideas can be shown experimentally. in the space below, write a scientific question to address by doing this experiment.
  
• what role are textiles believed to have played in incan culture? a. used as decorative clothing used for rituals b. used to identify a person’s profession c. indicated a person’s ethnic identity and social rank
  
• the sum of two numbers is 58. the first number is 8 less than half the second number. let c represent the first number. let d represent the second number. which statements about solving for the two numbers are true? check all that apply. the equation c + d = 58 represents the sum of the two numbers. the equation c + d = 58 represents the sentence “the first number is 8 less than half the second number.” the equation c = one-half d minus 8 represents the relationship between the two numbers. the equation c = one-half d minus 8 represents the sum of the two numbers. the number d is 14. the number c is 44. the number c is 14. the number d is 44.
  
• which best defines the term spoils system? a system that forced american indians to relocate to oklahoma territory a system that allowed the winning political party to give jobs to supporters a system that implemented the renewal of a charter for a national bank a system of federal tariffs on goods imported from foreign nations
  
• the pedigree on the right shows the inheritance pattern for an x-linked recessive disorder. how many individuals are carriers of the disease but are not affected?
  
• keeping in mind hemingway’s iceberg principle, what feeling is he trying to convey by describing the scene as an “entrance to a circus or a native village”? a feeling of unease as the narrator is driving into a peculiar and alien location a feeling of sadness at the devastation that has been caused by violence of war a feeling of joy as the narrator realizes that he is alive despite all the carnage a feeling of defeat about a war that has taken so many lives and still continues on
  
• which describes any compound that has at least one element from group 17? halide noble gas metalloid transition metal
  
• if the equilibrium constant of a given reaction is 2.54, what is the equilibrium constant of its reverse reaction?
  
• what are the two things christakis discovered about how social networks work?