Steve4Physics's latest activity
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SSteve4Physics replied to the thread An interesting GCSE question: Why are electric lamps connected in parallel in house wiring?.The lamps in my house all run on mains voltage! With the question as stated, the only reasonable answer is C. There are occasionally...
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SSteve4Physics reacted to kuruman's post in the thread Equilibrium Position of a Hanging Candy Cane with
Like.
For the record, here is my solution. In the figure on the right the two black dots represent the centers of mass of the semicircle (top)... -
SSteve4Physics replied to the thread Equilibrium Position of a Hanging Candy Cane.You can check your expressions for ##x_1## and ##x_2##. Put ##\theta = 0## into the expressions – do you get the expected values? (BTW...
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SOh, I thought that was bra-ket notation <EX | T>
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SSteve4Physics reacted to FactChecker's post in the thread Potential difference defined in non-conservative electric field with Like.
You can skip to the last 11 minutes if you want. It's worth it.
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SSteve4Physics replied to the thread Potential difference defined in non-conservative electric field.The video is 50+ minutes long and I don't have time to watch it yet - but will check it out later. But I see your point about the...
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SSteve4Physics reacted to hutchphd's post in the thread Potential difference defined in non-conservative electric field with Like.
But this number will depend upon the exact routing of the wires to the voltmeter (the line integral is path dependent). This is Prof...
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SSteve4Physics replied to the thread Potential difference defined in non-conservative electric field.EDIT/CORRECTION The electric field here is non-conservative. But it doesn't matter. If you connect a voltmeter between points 1 and 2...
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SSteve4Physics replied to the thread Potential difference defined in non-conservative electric field.The wording used in the question is potentially (pun intended) misleading and may be the source of confusion. There will be an induced...
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SSteve4Physics reacted to hmparticle9's post in the thread Finding the charge on pith balls with Like.
So I get $$T \sin \frac{\theta}{2} = F_e \text{ and } T \cos \frac{\theta}{2} = mg$$ Dividing and rearranging I get $$mg \tan...
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SSteve4Physics replied to the thread Finding the charge on pith balls.Presumably the question mark at the end is not needed?
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SSteve4Physics replied to the thread Finding the charge on pith balls.Hi @hmparticle9. To add what's already been said, there are three forces acting on each particle. Can you name them and can you draw a...
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SSteve4Physics reacted to Andy Resnick's post in the thread Demonstrating a pinhole camera with a screen projector with Like.
I did not use a screen projector, but a colleague and I set up a camera obscura using an empty room (with a window). The demo worked...
