PHYSICS 31

[blueberryyums]

Thank you. 10 oscillations it is. And for your time doubt, time should be taken in 2 dp.

 

[natsume hyuga]

to get the percentage uncertainity of an average, the ER says "Very few candidates choose to use half the range of repeated readings" Explainn????????

 

[blueberryyums]

to get the percentage uncertainity of an average, the ER says "Very few candidates choose to use half the range of repeated readings" Explainn????????

For example, the absolute uncertainty for taking time can range from 0.1 to 0.6s.
We choose an uncertainty of 0.2s.
Since we did two repeats, the uncertainty is lesser so therefore we divide 0.2s by 2 = 0.1

0.1/final reading of two x 100 = percentage uncertainty.

Hope I helped

 

[raysonzaffar]

For example, the absolute uncertainty for taking time can range from 0.1 to 0.6s.
We choose an uncertainty of 0.2s.
Since we did two repeats, the uncertainty is lesser so therefore we divide 0.2s by 2 = 0.1

0.1/final reading of two x 100 = percentage uncertainty.

Hope I helped

Isn't it supposed to be the other way round ---- when u repeat twice then find an average the absolute uncertainty is supposed to be added right ... depending on the situation

 

[Ariel Robert]

100%
Oscillation and torque came for the exam
Torque is exactly from 2011
And oscillations totally new...

 

[raysonzaffar]

100%
Oscillation and torque came for the exam
Torque is exactly from 2011
And oscillations totally new...

Had done Q1 for the mocks ... Q2 was quite retarded though ..... just like the prediction