Final answer:
The time per heart beat at a heart rate of 150 beats per minute is 0.4 seconds. This is calculated by dividing 60 seconds by the heart rate of 150 beats per minute.
Step-by-step explanation:
To calculate the heart rate using the 1500 method, you need the number of small squares between two R waves on an electrocardiogram (ECG). However, we can calculate the time per heart beat if the heart rate is given. Since the student's question related to determining the heart rate is incomplete, I will answer the separate question provided in the reference: If your heart rate is 150 beats per minute during strenuous exercise, what is the time per beat in units of seconds?
To find this, we divide the number of seconds in a minute by the heart rate in beats per minute: There are 60 seconds in one minute, so if the heart is beating 150 times in one minute, we calculate the time per beat as follows:
Time per beat (seconds) = 60 seconds per minute / 150 beats per minute = 0.4 seconds per beat