# Search results

1. ### Significant Figures

'A' should actually be .150, so the difference between our answers is a bit bigger. Thanks guys.
2. ### Significant Figures

t=3.00, k=225, m=150.0 √k/m)=1.22 and 1.22t=3.66 but t√k/m)=3.67 And therein lies the problem. He's making a sig fig calculation before multiplying √k/m) by t. There's also a discrepancy in the ways we approach what's inside the sine function, thus exacerbating the already-present...
3. ### Significant Figures

The author of my physics book seems to be a little significant-figure-happy: m=150.0, k=225, A=.15, t=3.00, δ=π He does this : -A√k/m)sin(t√k/m)+δ)=-.15*1.22sin(3.00*1.22+π)=-.0907 Whereas I do: -A√k/m)sin(t√k/m)+δ)=-A√k/m)sin(3.67+π)=-A√k/m)sin(6.81)=-.0924 Isn't my way more accurate...
4. ### The Right-Hand Method (ugh)

Thank you Dude and james, I think I've got it now.
5. ### The Right-Hand Method (ugh)

The part I don't get is: "line up your fingers with a so that if you were to close your fingers, you'd be moving towards b" Do you mean pretend to grasp b? I just don't get how curling my fingers would make my hand move towards b, or anywhere.
6. ### The Right-Hand Method (ugh)

I'm learning about cross-products of vectors right now. What I don't get is how the right-hand method of determining the direction of the z-axis (or k, whatever) actually works. I've looked at a couple online explanations and I'm still just as confused. Is there anywhere online that I could...