Answer
Vernier caliper measure nearest to 0.01 mm.
If the correct reading of the experiment is 9.62 mm.
But you misread it and listed it as 8.62 mm.
This is Clearly the case of mistake in Accuracy.
Because the reading is wrong and answer is not accurate hence it is mistake in accuracy.
To Judge weather the reading is precise or not we should have a range where the result is acceptable but in the question no range is given. So, we cannot comment on precision.
The roughness of the surface, the mass of the object, and the area of contact.
Answer:
The acceleration towards the center will be
Explanation:
Given the running track is an oval shape, and the diameter of each half-circle is 74 meters.
Also, the runner took 1 minute and 40 seconds to complete 400 m one round of the track.
We need to find the acceleration towards the center.
First, we will find the speed.
Where is the speed.
is the distance covered by the rider that is 400 meters.
is the time taken by the rider to complete the lap which is 1 minute and 40 seconds. seconds.
So,
And
Where is the acceleration towards the center.
is the radius which will be the half of the diameter 74 meters.
Hence, the radius will be 37 meters.
So, the centripetal acceleration of the rider will be
Use your units . . . "period" is time, so you know that you have to
set up your fraction with time in the numerator.
10 seconds / 4 waves =
(10/4) sec/wave = 2.5 seconds per wave.
______________________________________
Notice how the first answer set it up exactly backwards.
He would have seen his mistake immediately if he had
kept the units.
He started out by saying . . . . P = N / t
Keeping the units, P = (waves) / (second)
The answer will have units of "waves per second" .
That's frequency, not period.