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• dr. perez is part of a team of researchers who are working on designing and building a probe to study solar flares. what condition must the probe meet? it must be able to travel over 300,000,000 km to reach the sun. it must be able to withstand a temperature of up to 20 million degrees celsius. it must be able to penetrate to the core since solar flares originate there. it must be able to remain in the sun for at least eleven years.
  
• copper has a density of 8900 kg/m³. calculate the mass of 2.8 m³ of copper in kilograms.
  
• the ninety-five theses, written by , questioned the . this document was largely responsible for starting the reformation movement.
  
• if a fan draws 220 watts on a 120- volt circuit what is the current being drawn?
  
• which of the following is not a manmade cause of global warming? a. burning fossil fuels b. deforestation c. respiration d. population growth
  
• which was an obstacle to the settlement of the american west? the cumberland gap the northwest territory the great plains the louisiana territory
  
• which environmental hazard is directly related to nuclear power production? land stripping global warming radiation leakage soil erosion
  
• during the cold war, what was the soviet union’s main objective in engaging in proxy wars against the united states?to free colonial countriesto empower developing nationsto spread communismto end democracy
  
• the __________ acts as the internal clock that controls sleep and waking cycles.
  
• what is the simplified form of the following expression?mc013-1.jpg2x4y82x2|y3z|4x2|y3z|4x4y8