What is the rhythm of "Still I Rise"?

Which of the following is an example of negative reinforcement? a.marty knocks over his mother's prize fern so she gives him a time out. b.gwen mows the lawn and her dad takes her out for ice cream. c.tara takes an aspirin, and her headache begins to go away. d. peter comes in late from his lunch and is fired from his job.

Briefly explain one difference in the practice of realpolitik by louis napoleon and otto von bismarck.

What is tge speed of sound in dry air at 0°c