Answer:
Ignition sources
Explanation:
Lightning
Smoking
Electrical and mechanical sparks
Answer:
Mary's target heart rate is 103 beats per minute (bpm).
Explanation:
The maximum heart rate (MHR) is the rate at which the human heart of a given person reaches the highest demands. At rest, the heart rate is about 60 to 80 beats per minute.
MHR = 220 - age
So, for Mary: MHR = 220 - 14 = 206 beats per minute (bpm)
Now we can calculate Mary's target heart rate:
Target heart rate = MHR * 50% = 206 * 0.5 = 103 beats per minute (bpm)
Hope this helped!
The speed of an exercise has a lot to do with the intensity of cardiovascular exercise.
The more the speed of an exercise is the greater intensity of the workout is and the more you sweat. However after a certain time you get fatigued and tired out.
For example, if you had planned to do an exercise for 30 minutes and you increase the speed of the exercise then probably you might not be able to complete the 30 mins as youll get fatigued before that time due to the high intensity.
Digestion, exercise, daily activity and basal expenditure <span />
