Recent content by Ineedahero

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    Undergrad Mass Needed to Convert to Energy & Blow Up Earth?

    2.94x10^16 kg So...that's the mass of what? Mass of Earth is something to the power of 24 right?
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    Undergrad Mass Needed to Convert to Energy & Blow Up Earth?

    I'm kind of surprised more people in the world aren't curious about this. Seems like kind of a big deal lol
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    Undergrad Mass Needed to Convert to Energy & Blow Up Earth?

    Ok, I see what you're saying - I'll try to be clearer. The minimum amount of energy to basically guarantee all life on Earth ends. So, if we knock it off orbit, I presume life will die because we need the sun to live. If we shatter it into a whole bunch of tiny pieces, none of which remain in...
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    Undergrad Mass Needed to Convert to Energy & Blow Up Earth?

    By blow up, I mean shatter Earth into a whole bunch of pieces, completely knock it off its orbit and kill everything. And what do you mean "split an asteroid in half"? I'm saying just convert a mass of 10,000 kg into pure energy...E = MC squared...is that enough energy to destroy the earth?
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    Undergrad Mass Needed to Convert to Energy & Blow Up Earth?

    To blow up earth... ...what mass would I need to covert to pure energy (roughly)? Like, they say a paper clip converted into pure energy is the equivalent of the atomic bomb that was dropped on Hiroshima. Is that true? If so, would a van converted into pure energy be enough to blow up Earth...
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    Capacitors charged to voltage in parallel

    Ok! Thanks a lot for the help!
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    Capacitors charged to voltage in parallel

    Hmm Qeach = 1.5*C1V1 The capacitance doesn't change, but the voltage does. Qeach = C1V2 1.5V1 = V2 So the new voltage is 1.5 * the original voltage?
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    Capacitors charged to voltage in parallel

    Well, since the voltage is constant (since they're in parallel), and the capacitances are equal, the charges must also be equal. So the charge will be cut exactly in half and go to each capacitor?
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    Capacitors charged to voltage in parallel

    Of course, what a silly error! Q = 3C1V1
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    Capacitors charged to voltage in parallel

    Hmm Q1 = C1V1 Q2 = C1*2V1 Q1 + Q2 = 2C1*3V1 Is that correct?
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    Capacitors charged to voltage in parallel

    Thanks for the help! Here's where I'm getting stuck - you say to work out the charge on each. Well, how do I calculate the charge?? I know that q = cv. I also have, essentially, two capacitors connected in series - once I find the equivalent capacitance of the two capacitors connected in...
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    Capacitors charged to voltage in parallel

    Homework Statement Suppose you have a capacitor with capacitance C charged to voltage V and a second capacitor with capacitance C charged to voltage 2V. The two capacitors are connected in parallel. What will be the voltage across the two capacitors after being connected in parallel?Homework...
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    Stokes' Theorem for F(x,y,z) over S: Solving for dA on a Bounded Surface

    Ahhhhhhhhhhhh, finally, I got the answers to match. Thank you so much for your help! You really cleared everything up. Thanks!
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    Stokes' Theorem for F(x,y,z) over S: Solving for dA on a Bounded Surface

    Of course - it should be the curl, I suppose I was a little exhausted when I did that. And yes, I've actually reworked the right hand side, and got a result of 32/3. And, rather than compute the cross product, could I not deduce the normal vector from the equation of the plane? 2x + 1y + 2z =...
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    Stokes' Theorem for F(x,y,z) over S: Solving for dA on a Bounded Surface

    In his example, f is a scalar function. In my example, it is a vector function. From that, I presume that I use the perpendicular vector and not its magnitude. I noticed that after he multiplies by the magnitude of the perpendicular vector, he made dA = dy dz, and he had x = g(y,z). This all...