** LC Physics 2017

thetalker

I converted to amps first and multiplied by 60 before dividing by the electron charge.

so my calculation was (2*10^-6)(60)

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(1,6*10^-19)

which gives; 7.5*10^14 electrons

Mr Rhode Island Red

And, same question, to get the velocity of the electron did you take the energy of the Xray photon and set it equal to the kinetic energy of the electron?

ciara18

Mr Rhode Island Red wrote: »

And, same question, to get the velocity of the electron did you take the energy of the Xray photon and set it equal to the kinetic energy of the electron?

Yeah I did that anyway!

Liordi

I thought that the experiments questions were really nice. I liked 5 and 12 too. Thought the ending of 6 was a bit awkward and I wasn't really sure of the colours at 7, hoping for a H2 but I'm not sure.

roisiny

ciara18 wrote: »

I could be totally wrong but I just said the last value because it had the longest length of string, and the longer the length of string the smaller the percentage error

I did the opposite to this. Crossed out shortest and said longest. I'd say both could end up right as in that experiment you can have too long a string but also too short a string ?

A97

The measurement with the longest time has the smallest percentage error. The error in the measurement would be roughly similar each time, maybe about a second or so, so the longest time is the most accurate.