Give the following answers to one decimal place. a) The average adult takes about 15 breaths per minute. Suppose you are enjoying a snowy day with a nice stroll outside where the temperature is −4.5 °C. Your body breathes in this cold air and needs to spend energy to change the air temperature to match your own internal temperature of 37 °C. Suppose each breath takes in a volume of half a liter (500 mL) of air with density ? =1.2?10 ?/??. Calculate the mass of air inhaled in i) one breath, ii) one minute, and iii) one hour. b) Air has a specific heat equal to one-fourth the specific heat of water. How much energy do you spend warming the air you breathe while walking outside for one hour in these conditions? (Remember to convert units where necessary!)
Give the following answers to one decimal place.
a) The average adult takes about 15 breaths per minute. Suppose you are enjoying a snowy day with a nice stroll outside where the temperature is −4.5 °C. Your body breathes in this cold air and needs to spend energy to change the air temperature to match your own internal temperature of 37 °C. Suppose each breath takes in a volume of half a liter (500 mL) of air with density ? =1.2?10 ?/??. Calculate the mass of air inhaled in
i) one breath,
ii) one minute, and
iii) one hour.
b) Air has a specific heat equal to one-fourth the specific heat of water. How much energy do you spend warming the air you breathe while walking outside for one hour in these conditions? (Remember to convert units where necessary!)
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