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• which best describes earth’s magnetic field lines? the field lines go out of earth at the geographic south pole and enter earth at the geographic north pole in the area where the magnetic pole aligns with the geographic pole. the field lines go out of earth near the geographic south pole and enter earth near the geographic north pole in an area where the magnetic pole does not align with the geographic pole. the field lines go out of earth at the geographic north pole and enter earth at the geographic south pole in the area where the magnetic pole aligns with the geographic pole. the field lines go out of earth near the geographic north pole and enter earth near the geographic south pole in an area where the magnetic pole does not align with the geographic pole.
  
• what are the substances that can be produced by fermentation? select all that apply. atp molecules water carbon dioxide oxygen lactic acid
  
• according to the law of conservation of momentum, what is the momentum of the object after the collision? 4,500 g · m/s 1,750 g · m/s 1,500 kg · m/s 3,000 kg · m/s
  
• the division and sharing of power between state and national governments is the principle of checks and balances. federalism. branching. popular sovereignty.
  
• nacl has a delta.hfus = 30.2 kj/mol and a delta.hvap = 171 kj/mol. what mass of nacl releases 452 kj of heat as it changes into a liquid?use q equals n delta h..2.64 g22.1 g155 g875 g
  
• ¿cuál de las siguientes palabras no significan “cool”? guay madre padre chévere
  
• a return of merchandise to the vendor results in a (a) debit to purchases. (b) credit to purchases returns and allowances. (c) credit to purchases. (d) debit to purchases returns and allowances.
  
• an iron bar at 200°c is placed in thermal contact with an identical iron bar at 120°c in an isolated system. after 30 minutes, both iron bars are at 160°c. if the iron bars were placed in thermal contact in an open system instead of an isolated system, how would the results be different? assume that the room temperature is 25°c.
  
• after traveling for 6.0 seconds, a runner reaches a speed of 10 m/s. what is the runner’s acceleration?
  
• what is the approximate length of the radius, r? 4.5 cm 9.0 cm 14.2 cm 28.3 cm