(a) A \( 75.0-\mathrm{kg} \) man floats in freshwater with \( 3.00 \% \) of his volume above water when his lungs are empty, and \( 5.00 \% \) of his volume above water when his lungs are full. Calculate the volume of air he inhales called his lung capacityin liters. (b) Does this lung volume seem reasonable?

Describe a method to measure the density of a liquid.

The loudness, \( L \), measured in decibels (Db), of a sound intensity, \( I \), measured in watts per square meter, is defined as \( L=10 \log \frac{I}{I_{0}} \), where \( I_{0}=10^{-12} \) and is the least intense sound a human ear can hear. Jessica is listening to soft music at a sound intensity level of \( 10^{-9} \) on her computer while she does her homework. Braylee is completing her homework while listening to very loud music at a sound intensity level of \( 10^{-3} \) on her headphones. How many times louder is Braylee's music than Jessica's? \( \frac{1}{3} \) times louder 3 times louder 30 times louder 90 times louder

The loudness, \( L \), measured in decibels (Db), of a sound intensity, \( I \), measured in watts per square meter, is defined as \( L=10 \log \frac{i}{i_{0}} \), where \( l_{0}=10^{-12} \) and is the least intense sound a human ear can hear. What is the approximate loudness of a rock concert with a sound intensity of \( 10^{-1} \) ? 2 Db 22 Db 60 Db 110 Db

(a) A \( 75.0-\mathrm{kg} \) man floats in freshwater with \( 3.00 \% \) of his volume above water when his lungs are empty, and \( 5.00 \% \) of his volume above water when his lungs are full. Calculate the volume of air he inhales called his lung capacityin liters. (b) Does this lung volume seem reasonable?

4. Write your answers on an A4 bond paper with a 0.5 in. border on all sides. 1. A completely reversible heat engine operates with a source at 1500 R and a sink at 500 R If the entropy of the sink increase by 10 Btu/R, how much will the entropy of the source decrease? How much heat in Btu is transferred from the source?