physics paper 3 help

[NOOR WAQAR]

to what precision are stopwatch readings taken. Ive always taken them to 2 decimal places which was the precision of the actual stopwatch but i read somewhere that you have to take it to 1 decimal place

 

[Rizwan Javed]

to what precision are stopwatch readings taken. Ive always taken them to 2 decimal places which was the precision of the actual stopwatch but i read somewhere that you have to take it to 1 decimal place

1 decimal place.

 

[Sariya Khan]

1 decimal place.

Really? :O

 

[Rizwan Javed]

Really? :O

Yes. It's always mentioned in the marking scheme.

 

[NOOR WAQAR]

oh and is it necessary to quote values in SI units in tables and graphs or we can carry on our readings in cm and mA etc?

 

[Sariya Khan]

oh and is it necessary to quote values in SI units in tables and graphs or we can carry on our readings in cm and mA etc?

If it makes the graph easier to plot,only then. However,you can if you want to.

 

[Roshaan Ahmed]

hey when writing units for the column headings can i write 10^-3 A inplace of mA

 

[Rizwan Javed]

hey when writing units for the column headings can i write 10^-3 A inplace of mA

Yes, you can.

 

[Roshaan Ahmed]

Thanks