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Chapter 1: Q16PE (page 33)
A can contains 375 mL of soda. How much is left after 308 mL is removed?
67 ml of soda is left in the can.
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The speed of sound is measured to be\({\rm{342 }}{{\rm{m}} \mathord{\left/ {\vphantom {{\rm{m}} {\rm{s}}}} \right. \\} {\rm{s}}}\)on a certain day. What is this in km/h?
(a) Write the complete伪 decay equation for226Ra. (b) Find the energy released in the decay.
(a) Find the size of the smallest detail observable in human tissue with 20MHz ultrasound. (b) Is its effective penetration depth great enough to examine the entire eye (about 3.00cm is needed)? (c) What is the wavelength of such ultrasound in air \[{0^o}{\rm{C }}\]?
Approximately how many atoms thick is a cell membrane, assuming all atoms there average about twice the size of a hydrogen atom?
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?
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