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Chapter 1: Q3PE (page 33)
Show that 1.0 m/s = 3.6 km/h. Hint: Show the explicit steps involved in converting 1.0 m/s = 3.6 km/h
The required relation is proved below.
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If a marathon runner averages\({\bf{9}}.{\bf{5}}{\rm{ }}{{{\rm{mi}}} \mathord{\left/ {\vphantom {{{\rm{mi}}} {\rm{h}}}} \right. \\} {\rm{h}}}\), how long does it take him or her to run a\(26.22{\rm{ mi}}\)marathon?
Classical physics is a good approximation to modern physics under certain circumstances. What are they?
Calculate the approximate number of atoms in a bacterium. Assume that the average mass of an atom in the bacterium is ten times the mass of a hydrogen atom. (Hint: The mass of a hydrogen atom is on the order of 10-27kg and the mass of a bacterium is on the order of 10-15kg.)
Heroes in movies hide beneath water and breathe through a hollow reed (villains never catch on to this trick). In practice, you cannot inhale in this manner if your lungs are more than\[{\rm{60}}{\rm{.0 cm}}\]below the surface. What is the maximum negative gauge pressure you can create in your lungs on dry land, assuming you can achieve 鈭抃[{\rm{3}}{\rm{.00 cm}}\]water pressure with your lungs\[{\rm{60}}{\rm{.0 cm}}\]below the surface?
What are the advantages and disadvantages of connecting batteries in series? In parallel?
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