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Mountain climbers carry bottled oxygen when at very high
Chapter 7, Problem 57(choose chapter or problem)
Problem 57PE
Mountain climbers carry bottled oxygen when at very high altitudes. (a) Assuming that a mountain climber uses oxygen at twice the rate for climbing 116 stairs per minute (because of low air temperature and winds), calculate how many liters of oxygen a climber would need for 10.0 h of climbing. (These are liters at sea level.) Note that only 40% of the inhaled oxygen is utilized; the rest is exhaled. (b) How much useful work does the climber do if he and his equipment have a mass of 90.0 kg and he gains 1000 m of altitude? (c) What is his efficiency for the 10.0-h climb?
Questions & Answers
QUESTION:
Problem 57PE
Mountain climbers carry bottled oxygen when at very high altitudes. (a) Assuming that a mountain climber uses oxygen at twice the rate for climbing 116 stairs per minute (because of low air temperature and winds), calculate how many liters of oxygen a climber would need for 10.0 h of climbing. (These are liters at sea level.) Note that only 40% of the inhaled oxygen is utilized; the rest is exhaled. (b) How much useful work does the climber do if he and his equipment have a mass of 90.0 kg and he gains 1000 m of altitude? (c) What is his efficiency for the 10.0-h climb?
ANSWER:
Solution 57PE :
a)
Step 1 of 4:-
While climbing at a rate of , the oxygen intake is
.
While climbing mountains, it gets doubled which is,
.
For 10 hrs of climbing, the climber would require,
.
So, to climb the mountain for 10 hrs, the oxygen required is .
b)