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• to calculate the change in kinetic energy, you must know the force as a function of _______. the work done by the force causes the kinetic energy change.
  
• a farmer has some problems with the quality of his soil. the soil seems to have lost some of the nutrients that help crops grow. now the farmer is unable to grow crops on his field. what should the farmer do to ensure that the nutrients in the soil are replenished? a. let the land lie fallow for a season. b. exchange the old soil with new soil. c. grow more winter crops on the field. d. grow more summer crops on the field.
  
• what messages do you think are conveyed to americans in this 1917 poster? check any of the boxes that apply. americans must not ignore threats by other countries. americans must unite against enemies. american citizens are unaware of danger. the united states should defend civilization in times of war.
  
• which best describes the act of using senses or tools to gather information?creating a hypothesismaking an observationsummarizing the resultsrecording the measurements
  
• examine the public service ads. the first ad is from 2001; the second ad is from 1950. how are these ads similar? both use emotional appeals and target children. both use ethical appeals and target adults. both use emotional appeals and target adults. both use logical appeals and target children.
  
• write an expression having only two terms that is equivalent to 2x – 3. explain how you wrote the expression and how you can check that it is equivalent.
  
• which descriptions are true regarding different muscle types? select four options. cardiac and skeletal muscles are striated. skeletal and smooth muscles are nonstriated. smooth and cardiac muscles are voluntary. heart and digestive muscles are involuntary muscles. smooth and skeletal muscles are involved in movement. cardiac muscles work to pump blood.
  
• what step ends translation? responses addition of an amino acid into the growing peptide chain addition of an amino acid into the growing peptide chain separation of mrna from the ribosome when a stop codon is reached separation of mrna from the ribosome when a stop codon is reached detachment of trnas from the ribosome detachment of trnas from the ribosome connection of trna anticodons with codons on mrna
  
• serena is single. she purchased her principal residence three years ago. she lived in the home until she sold it at a $300,000 gain this year. serena was allowed to exclude $250,000 of the $300,000 gain. what is the character of the $50,000 gain she was not able to exclude?
  
• read the passage from the arabian nights entertainments. the main character's motivation is to