Recent content by xlzhsteven

it's what the question ask for

There is one question from my physics HW which asks "By what percentage does your rest mass increase when you climb 30 m to the top of a ten-story building?" Please help me with this problem. I don't know what equation to use to figure out the answer.

There is one question from my physics HW which asks "By what percentage does your rest mass increase when you climb 30 m to the top of a ten-story building?" Please help me with this problem. I don't know what equation to use to figure out the answer.

Thank You, I don't know how to clear 'x', but I just reset my calculate, so everything works fine now.

I just bought my ti-89 Ti Please help me with this problem. I can't get the right integral, instead I get a matrix look output. Check the picture I attach to this post, then tell me what I should do to have the right answer. Thank You

i don't know, it seems like nspire is cheaper than ti-89 titanium, i think nspire has more features. is nspire better than ti-89 titanium? nspire cas or just nspire?

I have bought the used one, it turns out to be a crap, calculator is sticky, some of the buttons don't pop up after I press on it, so I don't trust used items any more.

I was checking the price for ti-89 titanium on both ebay and amazon, the cheapest price I can get is 132 with shipping. Can anyone give me some suggestion or website that I can get a cheaper price? Thank You

Can anyone help me? I have math final tomorrow.

I have attached my procedure in scan0002.jpg

Question is attached as Clipboard01.jpg I have tried the use Variation of Parameters to solve this question, but I kept getting wrong answer. This is What I get y=(2e^x)(Cos(e^x))+0.5(e^(-x))Cos(e^(-x))-2Sin(e^(-x)) This is the right answer: y=-Sin(e^(-x))-(e^x)Cos(e^(-x)) Procedure is...

3.108eV

is that right?

So I have 3.108 for the answer of the work function

Should I use 0.5mv^2=hc/wavelength-work function, then what should I use for the mass in 0.5mv^2, the mass of an electron?