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Express your answers to problems
Chapter 1, Problem 21(choose chapter or problem)
Problem 21PE
Express your answers to problems in this section to the correct number of significant figures and proper units.
A person measures his or her heart rate by counting the number of beats in 30 s. If 40 ± 1 beats are counted in 30.0 ± 0.5 s , what is the heart rate and its uncertainty in beats per minute?
Questions & Answers
QUESTION:
Problem 21PE
Express your answers to problems in this section to the correct number of significant figures and proper units.
A person measures his or her heart rate by counting the number of beats in 30 s. If 40 ± 1 beats are counted in 30.0 ± 0.5 s , what is the heart rate and its uncertainty in beats per minute?
ANSWER:
Step 1 of 7:
To find the heartbeat rate and uncertainty in beats per minute
Number of beats N = 401 beats
Time taken t = 30.00.5 s