-0 m/s
- average velocity=displacement/time
- the runners displacement is zero so her average velocity must be zero
Answer:
72 beats per minute
Explanation:
Heart beat causes the flow of blood round the body. This heart beat can be felt as pulse in the wrist or neck carotid artery. The heart rate which is measured in beats per minute (BPM) is used to determine the number of heart beats per minute.
You can calculate your BPM using the carotid artery found in the neck close to the windpipe.
Given that for 20 seconds, Bill had a total of 24 beats.
60 seconds = 1 minute.
Hence, Bill's BPM = (24 beats per 20 seconds) * (60 seconds per minute) = 72 beats per minute
Power = Work / Time
If W = 50 J and T = 5s
P = W/T = 50J/5s = 10 Watts
Answer:
The second wheel
Explanation:
The torque is given by
(1)
where I is the moment of inertia and a is the angular acceleration. If we take into account the moment of inertia of a disk and a ring ()for the first wheel) we have:
where we used that both wheel have the same mass. By replacing in (1) we obtain:
Hence, the second wheel (the disk) has a greater acceleration.
hope this help!!
Answer:
Scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis.
Explanation:
