- #1
elephantorz
- 35
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1. In one of Thompson's experiments he placed a thin metal foil in the electron beam and measured its temperature rise. Consider a cathode-ray tube in which electrons are accelerated through a 2,000 V potential difference, then strike a 10 mg copper foil.
2. r = (mv)/(qB)
v = E/B
3. I am really kind of at a loss as to how to set up this...I am not sure I am in the right track, and I don't know if there is an equation that relates temperature with electricity, I am sure there is and if there is I would like to be pointed to it, I think that's really all I need, unless I am completely doing the wrong thing :/
Thanks guys (that includes females :] ).
- How many electrons strike the foil in 10 s, if the foil temperature rises 6.0 C?
2. r = (mv)/(qB)
v = E/B
3. I am really kind of at a loss as to how to set up this...I am not sure I am in the right track, and I don't know if there is an equation that relates temperature with electricity, I am sure there is and if there is I would like to be pointed to it, I think that's really all I need, unless I am completely doing the wrong thing :/
Thanks guys (that includes females :] ).