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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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a) What energy photons can pump chromium atoms in a ruby laser from the ground state to its second and third excited states?
(b) What are the wavelengths of these photons? Verify that they are in the visible part of the spectrum.
(a) A woman climbing the Washington Monument metabolizes \[6.00 \times {10^2}{\rm{ }}kJ\] of food energy. If her efficiency is \({\bf{18}}{\bf{.0\% }}\) , how much heat transfer occurs to the environment to keep her temperature constant? (b) Discuss the amount of heat transfer found in (a). Is it consistent with the fact that you quickly warm up when exercising?
What are the closest frequencies to \[500\;{\rm{Hz}}\]that an average person can clearly distinguish as being different in frequency from \[500\;{\rm{Hz}}\]? The sounds are not present simultaneously.
State how many significant figures are proper in the results of the following calculations: (a)(b)(c).
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 −\[{\rm{3}}{\rm{.00 cm}}\]water pressure with your lungs\[{\rm{60}}{\rm{.0 cm}}\]below the surface?
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