Number 43

In Problems 41-48, you need to make some assumptions before you estimate your answer. State your assumptions and then calcu- late the exact answer. 41. How many classrooms would be necessary to hold 1,000,000 inflated balloons? 42. The Genesis space capsule crashed into the Utah desert and Keay Davidson said (in the Chronicle Science Writer), "Shaken NASA officials immediately began the tedious process of recovering the capsule. They hope to salvage the probe's unique scientific data: roughly a billion billion parti- cles from the deep-space 'solar wind.'" State the number of particles in scientific notation. 43. Approximately how high would a stack of 1 million $1 bills be? (Assume there are 233 new $1 bills per inch.)